a petroglyph is an image created of an astronaut by removing part of the surface of a rock by incising, chipping, carving a form

petroglyph created astronaut removing surface rock incising chipping carving form art indigenous talampaya cayon rioja argentina leaf soil tree painting autumn geology flower plant wall reflection nature asphalt flooring terrain blue frost art indigenous national park located east centre province argentina dry bed river dinosaurs lived millions years fossils interesting ischigualasto found remains peoples' settlements petroglyphs puerta del cañón may 2020