Hand print on rock

Interesting, hand prints and hand stencils are among the oldest and most numerous intentional "signatures" and marks left by individual humans, they are found the world over, in the American Southwest are numerous examples of the "stencilled hand" created by placing hand on rock then filling mouth with colored pigment and either sprayed through pressed lips, or more creatively, using a reed as a straw, or "spray paint nozzle", and the pigment spraying controlled around the hand pressed to the rock. In South America are examples of hand prints, where the individual covers the hand with pigment and then presses the hand to the stone for the impression. And in Africa and Asia and Australia and of course the many famous European caves. And don't forget all those countless "hand prints" paintings found in nearly every kindergarten classroom the world over. I've always thought of these hand prints as the precursor to graffiti, the want (or need?) of some (or all?) individuals to leave some mark on the world, and for the powerless, it is this seemingly insignificant and anonymous, yet really most powerful and most personal statement, "I was here! -- I too once a living being that dwelled in and was part of this creation."