The Mystery Flesh Pit is the name given to a bizarre natural geobiological feature discovered in the permian basin region of west texas in the early 1970s. The pit is characterized as an enormous subterranean organism of indeterminate size and origin embedded deep within the earth, displaying a vast array of highly unusual and often disturbing phenomena within its vast internal anatomy.
Following its initial discovery and subsequent survey exploration missions, the surface orifice of the Mystery Flesh Pit was enlarged and internal sections were slowly reinforced and developed by the Anodyne corporation which opened the Pit as a tourist attraction in 1976. In the early 1980s, the site was absorbed into the National Park System which operated and maintained the Mystery Flesh Pit until its sudden closure in 2007.