Evans Plunge

Long before any pool was built, the warm springs of this valley were known and valued by the Lakota and the Cheyenne, who regarded the healing waters as a place set apart. Tradition holds that this was neutral, shared ground where different nations could come for the water's benefits, and the springs remain part of the older, living history of the Oceti Sakowin homeland in the Black Hills.

That reputation for healing waters carried into the settler era, when the town of Hot Springs grew up around the promise of the mineral springs. The whole community, with its distinctive pink sandstone buildings, was built on the idea that these waters were good for body and spirit, and Evans Plunge became the centerpiece of that vision.

What makes Evans Plunge remarkable is that it is filled and warmed entirely by nature. Mineral springs bubble up through the gravel floor of the pool, delivering a steady flow of naturally warm water that keeps the pool at a comfortable temperature the year around, without any furnace or heater. The same flow drains continuously, so the entire volume of water refreshes itself many times over.

That constant turnover means the water is always clean and moving, a living spring rather than a still tank. Swimmers can feel the springs welling up beneath their feet, a direct connection to the geology of the Black Hills, where rain and snowmelt sink deep, warm in the earth, and return to the surface here, at the southern foot of the hills.

Evans Plunge opened in the 1890s, named for a local businessman who developed the springs into a bathhouse and pool, and it has operated continuously ever since, making it one of the longest-running swimming attractions in the region. Generations of families have learned to swim in its warm water, and it has been a summer institution for the whole southern Black Hills.

Over the decades the facility has grown and modernized, adding slides, play features, and other amenities that keep it lively for today's families, all while preserving the historic spring-fed main pool at its core. That blend of old and new lets visitors enjoy modern fun while swimming in the very same waters that drew people here more than a century ago.

The town of Hot Springs is worth exploring in its own right, a community of handsome pink sandstone buildings that give its historic downtown a warm, unified glow, all built during the boom the springs created. The Fall River runs through town, and the whole place has the easygoing feel of a small Western spa town at the edge of the mountains.

Because Evans Plunge is indoors and naturally warm, it is a year-round attraction, a welcome swim in the heat of summer and a cozy one when snow lies on the surrounding hills. Paired with the nearby Mammoth Site, Wind Cave, and the wider southern Black Hills, it anchors an easy day in a quieter, less crowded corner of the region.

The closest Boutel™ stays, so you can turn this stop into an overnight. Each is a place we chose through independent editorial review, never a paid placement.

Evans Plunge, in Hot Springs in the southern Black Hills of western South Dakota, is a historic indoor swimming pool fed by natural warm mineral springs, billed as the world's largest naturally heated indoor pool. Fed continuously by warm mineral spring water, the large pool has welcomed visitors for well over a century, offering a warm swim year-round, along with waterslides, a play area, and other pool features in a historic and family-friendly setting. The naturally warm, spring-fed water and the fun features make it a beloved and unique destination. A delightful and historic warm-water pool, it charms visitors. With its warm springs, Evans Plunge offers a compelling destination in South Dakota.

You can swim in the large, naturally warm mineral-spring-fed pool, enjoy waterslides and a play area, relax in the warm water, and take advantage of the pool's family-friendly features in the historic indoor setting. The warm spring-fed pool, the waterslides, the play areas, and the historic setting are the draws, making it a fun and relaxing destination, especially welcome in any weather thanks to the warm water. The naturally warm swim is the highlight. With its pool, Evans Plunge offers a rewarding experience in South Dakota.

The water at Evans Plunge is warm because it is fed continuously by natural warm mineral springs that flow into the pool, keeping it at a comfortable temperature year-round without artificial heating, a feature that made Hot Springs a destination for its healing warm waters. This constant flow of naturally heated spring water is what makes Evans Plunge special and gives it its billing as the world's largest naturally heated indoor pool. The naturally warm water is the appeal. Enjoying this warm swim is the delight of a visit to Evans Plunge in South Dakota.

Because the pool is indoors and naturally warm, Evans Plunge is enjoyable year-round in any weather, making it a great stop in any season, including a cozy warm swim in the cold months. Because hours can vary, checking the current schedule before you go is wise. Because it is indoors and warm, Evans Plunge makes a rewarding stop any time of year in Hot Springs, South Dakota.

Evans Plunge is in Hot Springs in the southern Black Hills of western South Dakota, within reach of the Mammoth Site in the same town, Wind Cave National Park, Custer State Park, and the other attractions of the southern Black Hills. That makes Evans Plunge a compelling stop to combine with the Mammoth Site and the other attractions of the southern Black Hills on a visit to South Dakota.