Graham Hancock Petroglyph & Rock Art tour, Utah

Source: GrahamHancock.com



Prehistoric rock art, cave paintings and petroglyphs from all parts of the world show extraordinary similarities and even identical figures -- yet these ancient cultures were often separated by thousands of years of time and thousands of miles of geographical distance and were not in contact with one another.

In this clip from a visit to rock art sites in Utah's canyon country, arranged as part of the October 2010 Reality Sandwich retreat at the Boulder Mountain Guest Ranch, Graham Hancock argues that shamanic altered states of consciousness, often brought on by the use of entheogenic plants, are the most likely answer to the mystery. For a more detailed explanation see Graham's last non-fiction book Supernatural: Meetings with the Ancient Teachers of Mankind. His first novel Entangled also delves into this mystery.
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