Come soak in the largest mineral hot pool in Wyoming, third largest in the world. And enjoy our stunning red rock vista! Our pools healing hot water bubbles directly out of the Sacajawea Well named after the Shoshone guide who led Lewis and Clark to the Pacific, and flows straight into the pool for you to soak in! At an elevation of 3,947 feet, our all Natural 100- and 104-degree pools are the perfect place to relax and leave your worries behind. The Sacajawea well was drilled in 1918 by C.F. Cross in search of oil. Instead of oil, hot mineral water was struck. And erupted from the ground with such force that it destroyed the derrick (support structure that holds the drill) that sat above it. Currently, the well flows at a rate of 1.3 million gallons of 128-degree water every day!

In the decades to come the water flowing from the well left mineral behind forming the vibrant travertine formation that you can see in our logo and behind our pool today. In the mid 20th century the well and land surrounding it were sold to the Payne’s so that it could be properly maintained and taken care of. The Payne’s poured the concrete for the pool you see today measuring 235 feet by 72 feet and holding 84,600 cubic feet of water. Which means with 1.3 million gallons flowing from the Sacajawea every day, the water in the pool is exchanged every 11 hours. The Hot water of Thermopolis has been known to heal many physical ailments and improve physical health as well. Benefits of mineral hot springs are pain relief, improved circulation, detoxification passive calorie burning, and much more. Come ease your tension and occupational fatigue in our rejuvenating pool. Many travelers from around the world mean to only come for a day but find themselves extending their stay at the fountain of youth after experiencing the otherworldly relaxing qualities of our pool and often become repeat customers.

Fun fact the Fountain of Youth hosts between 75-100 Baptisms each year from local churches and conventions.