In this video I was checking out the acoustics in this huge windowed cavern, when I noticed some ancient pictographs over on the north wall, which were Barrier Style, over 1000 years old.. I retrieved the camera from the tripod and took it up there while recording (. . . wait for it). (also - I did not touch the painted hand - stayed a couple inches back from it with my hand). I was alone - proof of how much I talk to the borders.