Far into the unforeseeable future, when nuclear war and biological warfare had decimated the human population, killed most living beings and irradiated the earth with radioactive fallout, a small population of five thousand in a remote underground shelter in southwestern South Dakota would be one of the few surviving pockets of civilization scattered throughout America.

That’s the plan of California-based survival company Vivos. A couple of years ago, the company acquired this 18-square miles complex called Black Hills Ordnance Depot, about eight miles south of the town of Edgemont, and completely retrofitted it with state of the art amenities such as an internal power generation system, deep water wells, biological, chemical and radiation air filtration systems, sewage discharge, critical support equipment etc.

The Black Hills Ordnance Depot, now Vivos xPoint in South Dakota. Photo credit: Vivos