[4] The Caverns are home to two unique species — a beetle called the Natural Bridge Cave Beetle (Pseudanophthalmus pontis) and the Natural Bridge Isopod (Caecidotea bowmani).

The deepest part of the Cavern is 347 feet (106 meters) below the ground's surface.

The owner of the property at the time was Colonel Henry Chester Parsons, who was also associated with the opening of The Natural Bridge.

The Shenandoah Valley is underlain with limestone and also has karst topography, forming caves throughout the region.

The acid slowly erodes the calcium carbonate, the main component of limestone, creating caves, sinkholes and springs throughout the landscape.