The Hot Springs were used by both Shoshones and Arapahoes. Chief
Washakie of the Shoshones ceeded the springs to the U.S. government as
part of the treaty which established the Wind River Indian Reservation
As part of the treaty, Chief Washakie stipulated that part of the
hot springs remain free and available to everyone. A state bathouse in
the Hot Springs State Park is free.
The hot springs produce 18,600,000 gallons of water every 24 hours. The temperature is 135 degrees fahrenheit.
Numerous dinosaur fossils from the Jurassic period have been recovered near Thermopolis.
Butch Cassidy was a frequent visitor in the Thermopolis area