Carl Lehrburger, known as Carell, is an environmental activist, renewable energy entrepreneur and researcher. He is a founder and senior manager of PureVision Technology, Inc., along with other renewable and botanical enterprises. An avid rock art reader, he has published numerous articles in Ancient American magazine on petroglyphs and archaeoastronomy. In 2015, Bear & Co. published his first book, Secrets of Ancient America: Archaeoastronomy and the Legacy of the Phoenicians, Celts, and Other Forgotten Explorers . His New History of America website provides additional information on portable rock art aka artfacts . He may be contacted at [email protected]