Agree, Lots of those "ritual hunting magic" scenes were quite likely big brother impressing little brother with his hunting prowess or mom showing the kids where dinner came from.
Why not even consider that the Ancient tribes 5yr old kids were writing on the walls?
I see a record of the fabulous grudge match of the Scorpion (ctr. left) and the Tarantula ( ctr. low note the 8 legs) which was refereed by the Bull (ctr. rt.).
The smaller 8 legged figure just above the Bull and the Tarantula was the ring girl.
The stick figure to the rt. of the Bull indicates that they are in round two. Note the open triangle representing the priceless World Bug Trophy.
Anyone who has done the sacred Peyote knows this. Just ask Carlos Castenada, he saw it all.
But, then again, I see strange things in ink blots test. But hey, they're not my pictures.