Ozarks (Rural)
Onondaga Cave State Park protects a guided show cave
The park is a marquee public destination in the county, and Missouri State Parks is the authoritative source for tours, seasons, and access rather than third-party tourism pages.
Onondaga Cave State Park sits near the Meramec River in Crawford County. The park protects a cave, and the state offers guided tours that take you underground. Above ground, there are trails to hike and places to reach the river. Because it is a Missouri state park, the public owns and runs it. Missouri State Parks is the best place to check the things that change from year to year. That means tour times, seasons, hours, and any rules about reservations or accessibility (how easy a place is to use if you have trouble getting around). So before you go, look at the park’s official page instead of trusting travel websites. The cave was shaped by karst geology. Karst is land where water slowly dissolves rock and carves out caves. That same rock shapes much of this part of the Ozarks. The park is both a fun place to visit and a window into what lies underground.
References
Where this fits: this note belongs to Crawford County. See every local note for the county on its page.