Onyx Cave

Onyx Cave is a cave in Pulaski County featuring natural limestone formations shaped by mineral deposits over thousands of years. Inside, stalactites hang from the ceiling while stalagmites rise from the floor, creating a landscape carved entirely by water and stone.

The cave was added to the National Register of Historic Places in 1966 in recognition of its geological importance. This listing established it as a protected site for its natural limestone formations and scientific value.

The cave serves as an educational site where students and researchers study geological processes, cave ecosystems, and natural resource conservation methods.

Wear comfortable shoes with good grip since the ground is uneven and passages can be tight around the formations. Bring a jacket as the cave stays cool year-round regardless of outdoor conditions.

The cave serves as an active research site where scientists study climate patterns and document ongoing changes in subterranean environments over time. These investigations reveal how natural underground systems respond to environmental shifts.

Location: Pulaski County

GPS coordinates: 37.88556,-92.02972

Latest update: December 14, 2025 17:04