At http://siberiantimes.com/science/casestudy/news/n0339-these-petroglyphs-… …
In this instance, the Ukok Plateau in the high Altai, close to the border of Russia with Mongolia. Stylistically the petroglyphs are being dated between 8000 and 10,000 years ago. They are inscribed on rock faces on the ground rather than on steep valleys or inside caves, and people seem to have treated the rocks as a canvas, making the location a sort of picture gallery. They show a fascination with horses and bison.
At www.smithsonianmag.com/science-nature/cavemen-were-much-better-at-illust… … is the claim made in an article in the online journal PLOS ONE. Prehistoric humans depicted the gait of four legged animals much better and more often than modern artists.
The foot fall formula is a left hind, left fore,right hind, right fore – best foot forward.