Some science behind the scenes
Petroglyphs are rock engravings or carvings, some of which may be coloured, created by removing part of a rock surface by incising, picking, carving, and abrading. The word comes from the Greek words petro-, theme of the word "petra" meaning "stone", and glyphein meaning "to carve", and was originally coined in French as pétroglyphe.
They are found world-wide, and are often associated with prehistoric peoples. They are a good indicator that something is special about that marker stone. Very often the carvings themselves give you a clue, as they can represent shamans in various stages of trance, or shamans in their ‘power animal’ state [a shaman can ‘become’ a deer, lion, bear and so on in trance], or shamans as they experience out-of-body states or whilst they are journeying within the three worlds.
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