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Banners Corner Cave2) was explored by the writer and a small party of speleologists on November 23, 1961. The cave is located in the village of Banners Corner, Russell County, Virginia, and is well known to residents of that area. Initial exploration resulted in the discovery of an exceedingly large population (by hypogean standards) of planarians, Phagocata sllbterranea Hyman3) ; and isopods, Aselllls reCllrratlls Steeves. Both species were observed in a number of small pools within the first 150 meters of the cave. A second significant observation was that the pools occupied by these animals appeared to be contaminated by a brown, sludge-like materia!. This material was tentatively identified as sewage and the identification was later verified when examination of the terrain above the cave revealed a number of houses with septic tanks located directly over the cave passages below. Biological exploration of other Appalachian caves previous to this time had revealed a number of populations of troglobitic isopods (Asellus recurratus, A. pricei Levi, and A. richardsonae Hay) and troglobitic planarians (Sphalloplana rirginiana Hyman), but none of these populations approached the size of those in Banners Corner Cave. It appeared probable that a trophic relationship existed between the influx of sewage and the larger number of aquatic cavernicoles which inhabited the pools. Although situations comparable to the one in Banners Corner Cave probably exist elsewhere, none appear to have reported. While it has been established that the size of cavernicole populations in the aphotic zone of caves is often influenced to a large extent by the amount of available food (Husson, 1962; Poulson, 1964), few quantitative or correlative data are available.

A preliminary study on the effects of organic pollution of Banners Corner Cave, Virginia