At Boiling River, at almost exactly the 45th parallel and straddling the borders of Wyoming and Montana, you can stand with one leg in the glacial Gardner River and the other in boiling (probably really about 130 degrees) water. This is probably the nicest hot springs I have ever soaked in. The Boiling River runs alongside the Gardner River, and down into rock pools where the hot water mixes with the icy river water. A series of soaking pools create a range of temperatures, from cool to extremely hot. The result is nature's own hot tub, with small pools carved water with a great view of the Gardner River canyon walls. We soaked here for two and a half hours after a hike.
Cousins Mackenzie, Del, and Melanie
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