T. R. Evans, Charles Borland, Randy Sterns, and Sid West were first shown the cave on 27 December 1966.

[7] Each morning, flocks of birds exit the cave by flying in concentric circles, gaining height until they reach the entrance.

[8] In the evenings a large flock of swifts circles the mouth of the cave and about once each minute, a group of perhaps 50 breaks off and heads straight down toward the opening.

Cavers anchor their ropes on the low side, where bolts have been installed in the rock and the area is clear of obstructions.

A person without a parachute would take almost ten seconds to freefall from the mouth to the floor, hence the pit is also popular with extreme sports enthusiasts for BASE jumping.