Some science behind the scenes

Petroglyphs

 
 
Petroglyph Rock, Ontario Canada

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.

 
 
Petroglyphs on Newspaper Rock near Canyonlands National Park, south of Moab, southeastern Utah, USA

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.

 
 
European petroglyphs: Laxe dos carballos in Campo Lameiro, Galicia (IV-II millennium BCE), depicting both cup and ring marks and the shaman as deer – that’s why the antlers are as they are, they represent shamanic flight
 
 
 
 
 
 
 
 
 

Observations

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