21 Underrated National Parks for Avoiding Summer Crowds
17. Wind Cave National Park (South Dakota): Cool Caves, Quiet Prairie

Escape the summer heat and the Black Hills crowds by exploring Wind Cave. Known for its rare and intricate "boxwork" calcite formations, guided cave tours offer a fascinating subterranean adventure at a constant cool temperature year-round. Above ground, the park protects a beautiful swath of mixed-grass prairie often overlooked by visitors rushing between Mount Rushmore and Badlands NP. Enjoy scenic drives with high chances of spotting bison, pronghorn, elk, and prairie dogs in relative peace compared to nearby Custer State Park.








