Written by Tom Anderton. Originally published in Ancient American magazine issue #83.   A rock shelter near Van, Pennsylvania known as “Rainbow Rock” features the carvings of snakes, a human figure, apparent bird tracks and dots, as described by The Pennsylvania Archaeologist (Vol. 42, No. 3, September 1972).  While these images are common visual components … Continue reading Pennsylvania’s Elephant Petroglyph on the Allegheny River