Caves in Wyoming

Wyoming's cave geography is scattered across the limestone mountains of the western ranges. Sinks Canyon State Park near Lander has one of the stranger cave features in the US — the Popo Agie River disappears into a cave entrance and reappears a quarter mile downstream at a spring, with no apparent connection. Periodic Spring near Afton is the largest intermittent spring in North America. Most Wyoming cave terrain is wild and remote.

Every cave listed here is on public or accessible land. Always bring three light sources, water, and let someone know your plans before entering any undeveloped cave. Temperature inside: typically 50–62°F year-round. Explore all caves on the Trek4Free map →