Hot Springs Directory

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Remote hot springs in the White Cloud Mountains with stunning views and cascading pools.

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Riverfront hot springs with multiple pools along the Boise River.

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Family-friendly resort with multiple developed pools and slides.

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Remote backcountry springs with a distinctive horseshoe shape.

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Scenic high-elevation springs with panoramic mountain views.

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Luxurious resort with multiple thermal pools and spa services.

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Developed springs with bathhouse and changing facilities.

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Thermal spring located in the Middle Fork of the Salmon River area.

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Historic hot spring situated in Ketchum, Idaho with precise coordinates.

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Hot spring located in Gem County, Idaho with scenic surroundings.

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Natural hot spring located in southeastern Idaho.

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Natural geothermal spring located in Boise National Forest and Sawtooth Wilderness.

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Primitive series of soaking pools situated in the Selway-Bitterroot Wilderness.

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Hot spring located in Clark County, Idaho with easy road access.

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Unique hot spring that flows into the Gardner River in Yellowstone.

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Historic resort in Park County, Montana with lodging and dining.

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Riverfront hot springs near the entrance to Yellowstone.

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Reddish-orange colored waters with high mineral content.

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Remote high-elevation springs with stunning mountain views.

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Developed springs at the confluence of three rivers.

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Natural rock pools with twin outlets flowing into the river.

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Geothermal site located 2.5 miles outside Hot Springs in Lake County, Montana.

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Geographic location in Ravalli County, Montana with therapeutic waters.

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Acidic hot lake with colorful microbial mats.

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Famous for its travertine terraces and thermal activity in Yellowstone.

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Sulfuric vents and hot springs with roaring sounds.

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Thermal features along the shore of Yellowstone Lake.

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Geothermal hot spring notable for its large size and vibrant microbial coloration.

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Geothermal feature located in the Upper Geyser Basin of Yellowstone National Park.

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Hot spring located in Park County, Wyoming with precise coordinates.

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Hot spring located in Sublette County, Wyoming approximately 30 miles southeast of Jackson.

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Hot springs located in Elk City area. More details at https://idahohotsprings.com/destinations/panther/index.htm

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Hot springs located in Baker area. More details at https://idahohotsprings.com/destinations/crane-creek/index.htm

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Hot springs located in Challis area. More details at https://idahohotsprings.com/destinations/vulcan/index.htm

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Hot springs located in Challis area. More details at https://idahohotsprings.com/destinations/indian-creek/index.htm

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Hot springs located in Challis area. More details at https://idahohotsprings.com/destinations/bonneville/index.htm

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Hot springs located in Challis area. More details at https://idahohotsprings.com/destinations/boiling_springs/index.htm

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Hot springs located in Preston area. More details at https://idahohotsprings.com/destinations/battle-creek/index.htm

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Hot springs located in Hailey area. More details at https://idahohotsprings.com/destinations/worswick/index.htm

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Hot springs located in Baker area. More details at https://idahohotsprings.com/destinations/bronco_billy/index.htm

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Hot springs located in Preston area. More details at https://idahohotsprings.com/destinations/maple_grove/index.htm

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Hot springs located in Hailey area. More details at https://idahohotsprings.com/destinations/ninemeyer/index.htm

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Hot springs located in Challis area. More details at https://idahohotsprings.com/destinations/sunbeam/index.htm

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Hot springs located in Challis area. More details at https://idahohotsprings.com/destinations/warm-springs-creek/index.htm

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Hot springs located in Hailey area. More details at https://idahohotsprings.com/destinations/barrons/index.htm

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Hot springs resort located in Hailey area. More details at https://idahohotsprings.com/destinations/hot_springs_landing/index.htm

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Hot springs located in Preston area. More details at https://idahohotsprings.com/destinations/squaw/index.htm

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Hot springs located in Challis area. More details at https://idahohotsprings.com/destinations/middle-fork-indian-creek/index.htm

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Hot springs located in Baker area. More details at https://idahohotsprings.com/destinations/cabarton/index.htm

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Hot springs resort located in Twin Falls area. More details at https://idahohotsprings.com/destinations/indian/index.htm

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Hot springs located in Hailey area. More details at https://idahohotsprings.com/destinations/hot-springs/index.htm

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Hot springs located in Baker area. More details at https://idahohotsprings.com/destinations/lakey/index.htm

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Hot springs located in Hailey area. More details at https://idahohotsprings.com/destinations/guyer/index.htm

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Hot springs located in Challis area. More details at https://idahohotsprings.com/destinations/kwiskwis/index.htm

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Hot springs located in Hailey area. More details at https://idahohotsprings.com/destinations/vaughn/index.htm

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Hot springs located in Baker area. More details at https://idahohotsprings.com/destinations/council_mtn/index.htm

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Hot springs located in Twin Falls area. More details at https://idahohotsprings.com/destinations/salmon-falls/index.htm

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Hot springs located in Preston area. More details at https://idahohotsprings.com/destinations/cleveland/index.htm

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Hot springs located in Hailey area. More details at https://idahohotsprings.com/destinations/twin-springs/index.htm

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Hot springs located in Hailey area. More details at https://idahohotsprings.com/destinations/roaring_river/index.htm

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Hot springs located in Challis area. More details at https://idahohotsprings.com/destinations/kirkham/index.htm

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Hot springs located in Challis area. More details at https://idahohotsprings.com/destinations/haven-lodge/index.htm

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Hot springs located in Hailey area. More details at https://idahohotsprings.com/destinations/wardrop/index.htm

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Hot springs located in Hailey area. More details at https://idahohotsprings.com/destinations/white-arrow/index.htm

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Hot springs located in Challis area. More details at https://idahohotsprings.com/destinations/upper_loon/index.htm

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Hot springs resort located in Grangeville area. More details at https://idahohotsprings.com/destinations/zims/index.htm

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Hot springs located in Hailey area. More details at https://idahohotsprings.com/destinations/latty/index.htm

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Hot springs located in Challis area. More details at https://idahohotsprings.com/destinations/teapot/index.htm

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Hot springs located in Hailey area. More details at https://idahohotsprings.com/destinations/sheep_creek_bridge/index.htm

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Hot springs located in Hailey area. More details at https://idahohotsprings.com/destinations/skillern/index.htm

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Hot springs located in Hailey area. More details at https://idahohotsprings.com/destinations/atlanta/index.htm

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Hot springs located in Challis area. More details at https://idahohotsprings.com/destinations/dan-hodges/index.htm

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Hot springs located in Elk City area. More details at https://idahohotsprings.com/destinations/barth/index.htm

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Hot springs located in Baker area. More details at https://idahohotsprings.com/destinations/white_licks/index.htm

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Hot springs located in Hailey area. More details at https://idahohotsprings.com/destinations/bridge/index.htm

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Hot springs located in Challis area. More details at https://idahohotsprings.com/destinations/mollys/index.htm

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Hot springs located in Challis area. More details at https://idahohotsprings.com/destinations/pine_burl/index.htm

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Hot springs located in Challis area. More details at https://idahohotsprings.com/destinations/pine_flats/index.htm

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Hot springs located in Twin Falls area. More details at https://idahohotsprings.com/destinations/miracle/index.htm

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Hot springs located in Hailey area. More details at https://idahohotsprings.com/destinations/smiths_cabin/index.htm

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Hot springs located in Challis area. More details at https://idahohotsprings.com/destinations/elkhorn/index.htm

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Hot springs located in Hailey area. More details at https://idahohotsprings.com/destinations/coyote/index.htm

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Hot springs located in Challis area. More details at https://idahohotsprings.com/destinations/foster-ranch/index.htm

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Hot springs located in Hailey area. More details at https://idahohotsprings.com/destinations/lightfoot/index.htm

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Hot springs located in Challis area. More details at https://idahohotsprings.com/destinations/basin_creek/index.htm

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Hot springs located in Challis area. More details at https://idahohotsprings.com/destinations/owen_cabin/index.htm

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Hot springs located in Hailey area. More details at https://idahohotsprings.com/destinations/hailey-hot-springs/index.htm

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Hot springs located in Twin Falls area. More details at https://idahohotsprings.com/destinations/hot-sulphur/index.htm

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Hot springs located in Hailey area. More details at https://idahohotsprings.com/destinations/granite_creek/index.htm

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Hot springs located in Challis area. More details at https://idahohotsprings.com/destinations/cox/index.htm

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Hot springs located in Challis area. More details at https://idahohotsprings.com/destinations/corder/index.htm

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Hot springs located in Hailey area. More details at https://idahohotsprings.com/destinations/willow_creek/index.htm

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Hot springs located in Baker area. More details at https://idahohotsprings.com/destinations/starkey/index.htm

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Hot springs located in Challis area. More details at https://idahohotsprings.com/destinations/donlay/index.htm

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Hot springs located in Baker area. More details at https://idahohotsprings.com/destinations/cove-creek/index.htm

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Hot springs located in Elk City area. More details at https://idahohotsprings.com/destinations/red-river/index.htm

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Hot springs located in Challis area. More details at https://idahohotsprings.com/destinations/grandjean/index.htm

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Hot springs located in Challis area. More details at https://idahohotsprings.com/destinations/south-fork-plunge/index.htm

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Hot springs located in Hailey area. More details at https://idahohotsprings.com/destinations/loftus/index.htm

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Hot springs located in Challis area. More details at https://idahohotsprings.com/destinations/gold-fork-hot-springs/index.htm

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Hot springs located in Baker area. More details at https://idahohotsprings.com/destinations/fairchild/index.htm

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Hot springs located in Hailey area. More details at https://idahohotsprings.com/destinations/elk-creek/index.htm

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Hot springs located in Hailey area. More details at https://idahohotsprings.com/destinations/paradise/index.htm

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Hot springs resort located in Driggs area. More details at https://idahohotsprings.com/destinations/heise/index.htm

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Hot springs located in Pocatello area. More details at https://idahohotsprings.com/destinations/oakley/index.htm

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Hot springs resort located in Preston area. More details at https://idahohotsprings.com/bear-lake-hot-springs/bear-lake-hot-springs.htm

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Hot springs located in Twin Falls area. More details at https://idahohotsprings.com/destinations/bat/index.htm

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Hot springs located in Challis area. More details at https://idahohotsprings.com/destinations/fire_crew/index.htm

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Hot springs located in Challis area. More details at https://idahohotsprings.com/destinations/hospital/index.htm

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Hot springs located in Challis area. More details at https://idahohotsprings.com/destinations/pistol-creek/index.htm

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Hot springs located in Elk City area. More details at https://idahohotsprings.com/destinations/burgdorf/index.htm

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Hot springs located in Hailey area. More details at https://idahohotsprings.com/destinations/wolf/index.htm

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Hot springs located in Hailey area. More details at https://idahohotsprings.com/destinations/weatherby/index.htm

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Hot springs located in Driggs area. More details at https://idahohotsprings.com/destinations/pincock/index.htm

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Hot springs located in Hailey area. More details at https://idahohotsprings.com/destinations/baumgartner/index.htm

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Hot springs located in Challis area. More details at https://idahohotsprings.com/destinations/dagger_creek/index.htm

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Hot springs located in Challis area. More details at https://idahohotsprings.com/destinations/beardsley/index.htm

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Hot springs located in Hailey area. More details at https://idahohotsprings.com/destinations/tschanne/index.htm

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Hot springs located in Hailey area. More details at https://idahohotsprings.com/destinations/pierson/index.htm

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Hot springs resort located in Pocatello area. More details at https://idahohotsotsprings.com/destinations/downata-hot-springs/index.htm

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Hot springs located in Baker area. More details at https://idahohotsprings.com/destinations/krigbaum/index.htm

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Hot springs located in Twin Falls area. More details at https://idahohotsprings.com/destinations/lower_indian_bathtub/index.htm

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Warm springs located in Challis area. More details at https://idahohotsprings.com/destinations/rosalys/index.htm

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Hot springs located in Elk City area. More details at https://idahohotsprings.com/destinations/secesh/index.htm

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Warm springs located in Twin Falls area. More details at https://idahohotsprings.com/destinations/nat-soo-pah/index.htm

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Hot springs located in Driggs area. More details at https://idahohotsprings.com/destinations/brockman/index.htm

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Hot springs located in Preston area. More details at https://idahohotsprings.com/destinations/treasureton/index.htm

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Warm springs located in Preston area. More details at https://idahohotsprings.com/destinations/portneuf/index.htm

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Hot springs located in Baker area. More details at https://idahohotsprings.com/destinations/arling/index.htm

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Hot springs resort located in Pocatello area. More details at https://idahohotsprings.com/destinations/indian-springs-resort/indian-springs-resort-hot-springs.htm

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Hot springs located in Challis area. More details at https://idahohotsprings.com/destinations/bear_valley/index.htm

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Warm springs located in Grangeville area. More details at https://idahohotsprings.com/destinations/stinky/index.htm

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Hot springs located in Preston area. More details at https://idahohotsprings.com/destinations/steamboat/index.htm

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Warm springs located in Ashton area. More details at https://idahohotsprings.com/destinations/ashton/index.htm

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Warm springs located in Preston area. More details at https://idahohotsprings.com/destinations/blackfoot-river/index.htm

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Warm springs located in Preston area. More details at https://idahohotsprings.com/destinations/pescadero/index.htm

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Warm springs located in Pocatello area. More details at https://idahohotsprings.com/destinations/malad/index.htm

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Warm springs located in Dubois area. More details at https://idahohotsprings.com/destinations/whittaker/index.htm

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Warm springs located in Driggs area. More details at https://idahohotsprings.com/destinations/elkhorn/index.htm

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Warm springs located in Pocatello area. More details at https://idahohotsprings.com/destinations/grape-creek/index.htm

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Warm springs located in Preston area. More details at https://idahohotsprings.com/destinations/blackfoot-reservoir/index.htm

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Warm springs located in Baker area. More details at https://idahohotsprings.com/destinations/weiser/index.htm

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Hot springs located in Pocatello area. More details at https://idahohotsprings.com/destinations/lake-walcott/index.htm

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Warm springs located in Boise area. More details at https://idahohotsprings.com/destinations/sweet/index.htm

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Hot springs located in Driggs area. More details at https://idahohotsprings.com/destinations/taylor/index.htm

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Hot springs located in Challis area. More details at https://idahohotsprings.com/destinations/thomas-creek-ranch/index.htm

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Hot springs located in Challis area. More details at https://idahohotsprings.com/destinations/sunflower-flat/index.htm

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Hot springs located in Challis area. More details at https://idahohotsprings.com/destinations/robinson-bar/index.htm

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Hot springs located in Hailey area. More details at https://idahohotsprings.com/destinations/bowery/index.htm

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Hot springs located in Dillon area. More details at https://idahohotsprings.com/destinations/sharkey/index.htm

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Hot springs located in Hailey area. More details at https://idahohotsprings.com/destinations/west_pass/index.htm

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Hot springs located in Idaho Falls area. More details at https://idahohotsprings.com/destinations/condie/index.htm

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Hot springs located in Challis area. More details at https://idahohotsprings.com/destinations/campground/index.htm

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Hot springs located in Hailey area. More details at https://idahohotsprings.com/destinations/frenchmans_bend/index.htm

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Hot springs located in Hailey area. More details at https://idahohotsprings.com/destinations/browns_creek/index.htm

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Hot springs located in Challis area. More details at https://idahohotsprings.com/destinations/shower_bath/index.htm

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Hot springs located in Challis area. More details at https://idahohotsprings.com/destinations/trail_creek/index.htm

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Hot springs located in Challis area. More details at https://idahohotsprings.com/destinations/slate_creek/index.htm

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Hot springs located in Challis area. More details at https://idahohotsprings.com/destinations/rocky_canyon/index.htm

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Hot springs located in Challis area. More details at https://idahohotsprings.com/destinations/lower-loon-creek/index.htm

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Hot springs located in Hamilton area. More details at https://idahohotsprings.com/destinations/jerry_johnson/index.htm

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Hot springs located in Hamilton area. More details at https://idahohotsprings.com/destinations/weir_creek/index.htm

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Hot springs located in Idaho Falls area. More details at https://idahohotsprings.com/destinations/salmon/index.htm

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Hot springs located in Baker area. More details at https://idahohotsprings.com/destinations/belvidere/index.htm

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Hot springs located in Elk City area. More details at https://idahohotsprings.com/destinations/horse-creek/index.htm

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Hot springs located in Twin Falls area. More details at https://idahohotsprings.com/destinations/buckaroo/index.htm

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Hot springs located in Elk City area. More details at https://idahohotsprings.com/destinations/snowshoe/index.htm

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Warm springs located in Hamilton area. More details at https://idahohotsprings.com/destinations/colgate/index.htm

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Hot springs located in Grangeville area. More details at https://idahohotsprings.com/destinations/riggins/index.htm

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Warm springs located in Elk City area. More details at https://idahohotsprings.com/destinations/running/index.htm

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Hot springs located in Challis area. More details at https://idahohotsprings.com/destinations/danskin/index.htm

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Hot springs located in Boise area. More details at https://idahohotsprings.com/destinations/terteling/index.htm

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Hot springs located in Hailey area. More details at https://idahohotsprings.com/destinations/preis/index.htm

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Hot springs located in Twin Falls area. More details at https://idahohotsprings.com/destinations/bruneau/index.htm

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Hot springs located in Pocatello area. More details at https://idahohotsprings.com/destinations/marsh-gully/index.htm

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Hot springs located in Challis area. More details at https://idahohotsprings.com/destinations/sullivan/index.htm

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Hot springs located in Challis area. More details at https://idahohotsprings.com/destinations/silver-creek/index.htm

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Hot springs located in Challis area. More details at https://idahohotsprings.com/destinations/mormon-bend/index.htm

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Hot springs located in Hailey area. More details at https://idahohotsprings.com/destinations/easley/index.htm

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Hot springs located in Hailey area. More details at https://idahohotsprings.com/destinations/russian_john/index.htm

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Warm springs located in Pocatello area. More details at https://idahohotsprings.com/destinations/rockland/index.htm

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Hot springs located in Challis area. More details at https://idahohotsprings.com/destinations/ground-hog/index.htm

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Warm springs located in Driggs area. More details at https://idahohotsprings.com/destinations/alpine/index.htm

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Hot springs located in Twin Falls area. More details at https://idahohotsprings.com/destinations/indian-bathtub/index.htm

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Hot springs located in Twin Falls area. More details at https://idahohotsprings.com/destinations/poison/index.htm

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Warm springs located in Challis area. More details at https://idahohotsprings.com/destinations/mormon-ranch/index.htm

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Hot springs located in Hailey area. More details at https://idahohotsprings.com/destinations/big-smokey/index.htm

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Hot springs located in Hailey area. More details at https://idahohotsprings.com/destinations/queens-river/index.htm

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Hot springs located in Hailey area. More details at https://idahohotsprings.com/destinations/leggit-creek/index.htm

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Hot springs located in Hailey area. More details at https://idahohotsprings.com/destinations/basset/index.htm

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Hot springs located in Hamilton area. More details at https://idahohotsprings.com/destinations/marten-creek/index.htm

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Hot springs located in Hamilton area. More details at https://idahohotsprings.com/destinations/stuart/index.htm

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Hot springs located in Hamilton area. More details at https://idahohotsprings.com/destinations/prospector/index.htm

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Hot springs located in Challis area. More details at https://idahohotsprings.com/destinations/goat/index.htm

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Hot springs located in Challis area. More details at https://idahohotsprings.com/destinations/bull-creek/index.htm

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Hot springs located in Challis area. More details at https://idahohotsprings.com/destinations/sulphur-creek/index.htm

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Hot springs located in Challis area. More details at https://idahohotsprings.com/destinations/sheepeater/index.htm

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Hot springs located in Challis area. More details at https://idahohotsprings.com/destinations/billy/index.htm

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Hot springs located in Challis area. More details at https://idahohotsprings.com/destinations/forge-creek/index.htm

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Warm springs located in Challis area. More details at https://idahohotsprings.com/destinations/hot-creek/index.htm

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Warm springs located in Challis area. More details at https://idahohotsprings.com/destinations/cape-horn/index.htm

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Warm springs located in Challis area. More details at https://idahohotsprings.com/destinations/little-antelope-flat/index.htm

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Warm springs located in Idaho Falls area. More details at https://idahohotsprings.com/destinations/alkali-flats/index.htm

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Warm springs located in Elk City area. More details at https://idahohotsprings.com/destinations/lick-creek/index.htm

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Warm springs located in Dubois area. More details at https://idahohotsprings.com/destinations/big-eightmile-creek/index.htm

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Hot springs located in Idaho Falls area. More details at https://idahohotsprings.com/destinations/yandell-springs/index.htm

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Warm springs located in Baker area. More details at https://idahohotsprings.com/destinations/old-homestead/index.htm

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Warm springs located in Dubois area. More details at https://idahohotsprings.com/destinations/big-spring/index.htm

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Warm springs located in Challis area. More details at https://idahohotsprings.com/destinations/dollar-creek/index.htm

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Warm springs located in Hailey area. More details at https://idahohotsprings.com/destinations/warm-springs/index.htm

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Warm springs located in Twin Falls area. More details at https://idahohotsprings.com/destinations/thoroughbred/index.htm

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Hot springs located in Pocatello area. More details at https://idahohotsprings.com/destinations/woodruff/index.htm

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Warm springs located in Preston area. More details at https://idahohotsprings.com/destinations/henry/index.htm

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Hot springs located in Grangeville area. More details at https://idahohotsprings.com/destinations/boulder-creek/index.htm

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Hot springs located in Dubois area. More details at https://idahohotsprings.com/destinations/barney/index.htm

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Hot springs located in Preston area. More details at https://idahohotsprings.com/destinations/soda-springs/index.htm

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Warm springs located in Pocatello area. More details at https://idahohotsprings.com/destinations/tadpole/index.htm

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Hot springs located in Hailey area. More details at https://idahohotsprings.com/destinations/mores-creek/index.htm

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Warm springs located in Baker area. More details at https://idahohotsprings.com/destinations/keithly/index.htm

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Warm springs located in Pocatello area. More details at https://idahohotsprings.com/destinations/prices/index.htm

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Warm springs located in Pocatello area. More details at https://idahohotsprings.com/destinations/pleasantview/index.htm

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Warm springs located in Boise area. More details at https://idahohotsprings.com/destinations/thomas-flats/index.htm

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Warm springs located in Pocatello area. More details at https://idahohotsprings.com/destinations/kent/index.htm

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Warm springs located in Boise area. More details at https://idahohotsprings.com/destinations/highland-land-co/index.htm

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Warm springs located in Idaho Falls area. More details at https://idahohotsprings.com/destinations/rush/index.htm

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Hot springs located in Pocatello area. More details at https://idahohotsprings.com/destinations/rice/index.htm

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Natural spring in Pocatello area, USGS quad Chokecherry Canyon.

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Hailey area, Barber Flat 7.5 quad, warm soak spot.

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Hailey, Mountain Home 15 quad, accessible pools.

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Grangeville, Kelly Mountain 7.5 quad, flat area spring.

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Near Cascade, Payette NF, year-round access.

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Historic resort near Bozeman with 12 pools (57-106F), saunas, fitness center; family-friendly with indoor/outdoor options. $20 day use.

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Seasonal resort near Gardiner and Yellowstone NP; natural pools with mountain views and camping. $18 day use.

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Known as 'Water of the Gods'; rustic outdoor pools, live music, clothing-optional vibe. $15 day use.

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Five natural pools along Clark Fork River in Paradise; reservations required; casino, hiking nearby. $20-22 day use.

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Luxury resort in Anaconda with Olympic pools, waterslide; 155F source; mineral soaks, spa treatments. Guests only.

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Indoor/outdoor pools near Helena; 151F source; family-oriented with fitness amenities. $17-22 day use.

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Rustic indoor/outdoor pools in forested mountains near Lolo; lodging, camping nearby. Call for info.

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Seasonal resort in Beaverhead-Deerlodge NF near Polaris; snowmobiling, hiking access. $10 day use.

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Historic lodge with mineral pools in Jackson; near Big Hole Valley, fishing opportunities. $12 day use.

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Three outdoor pools in White Sulphur Springs; motel lodging, nearby hiking and fishing. $8-14 day use.

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Geothermal waters in indoor plunges and steam rooms near Boulder; event rental available. $10 day use.

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Natural thermal pools in pine forest near Sula; restaurant, seasonal operations. 92-107F.

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Northern border springs near Border since 1920s; natural, chemical-free continuous flow.

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Natural turquoise pool with waterfall off I-90 near Nimrod; easy access, scenic canyon setting, unmanaged. Free.

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High-temperature spring with developed pools near Ennis; near Madison Valley, seasonal operations. 193F source.

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Rustic outdoor pools in remote area near Twin Bridges; 140F source; camping and historic bathhouse. $10.

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Historic site near Helena; currently closed, no public access. Check for reopening updates.

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Large primitive backcountry spring near Dillon; requires hiking, undeveloped natural pool. Free.

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Warm community plunge in northern Montana near Landusky; basic facilities, remote access. 77F.

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Undeveloped spring in eastern Montana near Jordan; primitive, off-grid access. Free.

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Natural warm spring near Whitehall; private property, limited access, scenic river setting. Free.

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Historic resort site near Missoula; no longer operational, remnants visible. Closed.

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Remote resort in Bitterroot Valley near Darby; pools, cabins, hiking nearby. Seasonal.

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Village-style resort in Whitehall with indoor/outdoor mineral pools, cabins, camping, waterslide. $15.

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Free bathhouse with 104F mineral water in Thermopolis; terraces, trails, bison herd; open year-round, day-use park.

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Teepee-covered pools (100-112F) and 70-ft pool (96-98F) in Saratoga; spa, lodging, golf, brewery; guests/members. $10-20 soak.

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Secluded natural pools in forest near Jackson; 100-110F; primitive, requires hike; remote access; check conditions.

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Small primitive roadside pools near Saratoga; ~100F; free, natural rock pools along river; clothing optional.

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Primitive seasonal river soaks mixing hot/cold waters in Yellowstone NP; 95-105F; $35 park entry; open late June-early Sept; near Old Faithful.