That was my first thought when I saw these figures holding hands. There several similar petroglyphs in Valley of Fire State Park with 4 human-like figures holding hands. It reminded me of the decals on the back of family vans. Most of these rocks have fallen from heights of 400-500 feet and now are more accessible than when the drawings were originally done. The rock below is up about 30 feet with the 8-10 inch foot hold to stand in while chipping the images into the sandstone. They are fascinating reminders of our long standing need to record and remember.
