Ancient Arrow Project: Visitors from the Sky of Chaco Canyon

In 1972, in New Mexico, a group of hikers discovered an unusual artefact and pictographs within a canyon. An archaeologist from the University of New Mexico analyzed the artefact and searched the area where it was discovered, but found no signs that a prehistoric culture had established any site in the canyon. It was presumed that a nomadic, Native American tribe had occasionally used the canyon as a temporary settlement and had left behind the artefacts of their presence as a consequence. However, there were two very puzzling questions. All but one of the artefacts could be dated to the…