The northeast side of the hollow has a low cliff with an exposure of quartzite conglomerate with layers of sandstone found nearby. The southwest side of the hollow is partially bounded by a cliff composed of quartzite blocks. The water is light brown and has an alkalinity of 139 ppm and a pH of 7.3. The lake's maximum depth is 17 feet. Wildlife includes snapping turtle, green and gray tree frogs, green-backed heron, and Louisiana waterthrush.
Invertebrate life is abundant throughout the lake.
Individual Nature Study, Research Use, Hunting. Land Control - DNR Endangered Resources. Manager - Wildlife Manager, DNR Game Farm, Rt. 1, Box 152, Poynette, WI 53955. This site does not require community management.