Thermopolis is home to Hot Springs State Park and within it, the world's largest mineral hot springs, known as Big Spring.

Therapeutic geothermal mineral waters in the Rockies have attracted soakers for centuries, starting with the Utes, who ...

HOT SPRINGS STATE PARK — Emerging from the locker rooms, Scott Forke felt better, like he always does after a session in the Star Plunge’s Vapor Cave, Lobster Pot and heated mineral waters.