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

petroglyph created removing surface rock incising chipping carving form art indigenous talampaya cayon rioja argentina geology wood wall soil formation terrain iron tree trunk sculpture cliff ruins boulder badlands temple bedrock art indigenous national park located east centre province argentina dry bed river dinosaurs lived millions years fossils interesting ischigualasto found remains peoples' settlements petroglyphs