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Upper Loon Creek Hot Springs

Frank Church Wilderness, Idaho, United States
Upper Loon Creek Hot Springs
Location
Frank Church Wilderness, Idaho, United States
Water type
iron-rich
Temperature
38 °C
pH
6.3

Water profile

Thermicity
Neutral
38 °C
LowHigh

Soothing — neither hot nor cold, perfect balance.

Mineralisation
Bio-active
LowHigh

Rich in active gases or metals — a strong mineral character.

Buoyancy
Standard buoyancy
LowHigh

Soft water — natural, classic buoyancy.

FerBicarbonatesManganèse

Upper Loon Creek Hot Springs lies deep within the Frank Church Wilderness in Idaho, one of the largest protected wild areas in the United States. This iron-rich spring flows at around 38°C, reachable mainly by foot or raft, far from any road, surrounded by forest and untamed rivers.

Insider tip — The Loon Creek drainage in the Frank Church-River of No Return Wilderness is one of central Idaho's wildest and most beautiful river valleys — accessible only by primitive trail through mountains challenging even for experienced wilderness travellers. Upper Loon Creek Hot Springs provides iron-rich thermal relief in this backcountry environment, representing the quintessential western American hot spring experience: earned by effort, utterly remote, and unforgettably set in the heart of America's greatest wilderness.
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Frequently asked questions

How hot is the water?
The water is neutral here, around 38 °C — a perfect balance, neither too hot nor too cold.
What type of water is found here?
This spot features iron-rich water.
What is the best season to visit?
The most favourable period for this spot is: Toute l'année.