Homestead caldera

16 Best Swimming Holes in the U.S.

"Head to Homestead Resort to swim in the only warm water scuba diving destination in the continental U.S. The Homestead Caldera was formed around 10,000 years ago when melting snow from the nearby Wasatch Mountains seeped into the ground. Swimmers, divers, and snorkelers can explore the warm, mineral-rich waters, which stay at a constant 90 to 96 degrees Fahrenheit. While the swimming hole is located within a 55-foot-tall limestone rock formation, the resort has created a tunnel that carves through the rock at ground level, giving you an easier way to access its waters." - Travel + Leisure Editors