The parking area often provides considerable diversity, and the trail is good for woodland species. 

The area is entirely mixed hardwoods on steep slopes, but is surrounded by open prairie and farmland.  For a small area, it boasts a wide variety of species, including numerous sparrows, warblers, vireos, and flycatchers.  Great Blue Herons and Great Egrets nest on the northern boundary of the area, and their nests may be seen from the trail in spring before the trees leaf out. 

This area is surrounded on three sides by land in Blue Spring Branch Conservation Area, which is a separate hotspot.  Access is from a parking lot on Perry County Road 916.  It is named for its most prominent feature, a collapsed sinkhole from which water resurges during heavy rains.  Rocks rolling in the bottom of this sinkhole are worn smooth.

The area is entered via a westward walking trail within a narrow non-agricultural strip, that widens as the trail bends. The half-mile long trail is as gentle as the rugged karst terrain allows, which is to say steep, rocky, and often wet. The resurgence is at the bluff bottom directly below the west branch of the loop trail, but can only be seen well from the east branch.