Valley of Headless Men is a valley area inside of Nahanni National Park where many people have been found without heads, and has had some strange disappearances too. Nahanni National Park Reserve in the Dehcho Region of the Northwest Territories, Canada, approximately 500 km (311 mi) west of Yellowknife. The local oral history contains many references to the Naha tribe, a mountain-dwelling people who used to raid settlements in the adjacent lowlands. These people are said to have rather quickly and mysteriously disappeared.
Some theorize these incidences have been caused by things like feral people, or bigfoot, or the Naha tribe not actually disappearing but going deeper into wilderness and attacking people who search for gold there.