"The practice is common in English, cairns are sometimes referred to by their anthropomorphic qualities. In German and Dutch, a cairn is known as Steinmann and Stenenman respectively, meaning literally "stone man". A form of the Inuit inukshuk is also meant to represent a human figure, and is called an inunguak ("imitation of a person"). In Italy, especially the Italian Alps, a cairn is an "Ometto" a small man."
I am fascinated by these rock art structures.
Large man-made formations are also know as standing stones, megaliths and orthostats. These huge stones standing upright are believed to be as old as 2800 B.C.E. (how politically correct am I?), maybe older.