America's Best Swimming Holes

The Homestead Caldera underground swimming hole in Midway, UT
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Utah Office of Tourism

Nature’s swimming pools are key to beating the summer heat. Fortunately, you’ll find them everywhere, from New York to California.

The Homestead Caldera, Midway, UT

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Known locally as “the crater,” Midway’s 10,000-year-old geothermal spring offers tourists a respite from Utah’s brutal winter with waters that reach up to 90 degrees. For a small fee, guests can enjoy a swim in the caldera’s mineral-rich pool, or indulge in a paddleboard yoga class. Scuba enthusiasts can also rent equipment and explore the only warm-weather diving spot in the continental U.S. Historically, visitors had to earn the right to enjoy these therapeutic waters by rappelling through the top of the 55-foot-tall limestone dome. Homestead Resort, whose property includes the caldera, created a tunnel through the rock wall at ground level for easy access. —Caroline Hallemann

The Homestead Caldera underground swimming hole in Midway, UT

America's Best Swimming Holes

The Homestead Caldera, Midway, UT

Known locally as “the crater,” Midway’s 10,000-year-old geothermal spring offers tourists a respite from Utah’s brutal winter with waters that reach up to 90 degrees. For a small fee, guests can enjoy a swim in the caldera’s mineral-rich pool, or indulge in a paddleboard yoga class. Scuba enthusiasts can also rent equipment and explore the only warm-weather diving spot in the continental U.S. Historically, visitors had to earn the right to enjoy these therapeutic waters by rappelling through the top of the 55-foot-tall limestone dome. Homestead Resort, whose property includes the caldera, created a tunnel through the rock wall at ground level for easy access. —Caroline Hallemann

Utah Office of Tourism
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