Signal Mountain on the west side of Saguaro National Park is known for petroglyphs. It is thought that the rock art was created by the Hohokam people about 800 years ago. Some of the etchings truly are outstanding.Â



Signal Mountain on the west side of Saguaro National Park is known for petroglyphs. It is thought that the rock art was created by the Hohokam people about 800 years ago. Some of the etchings truly are outstanding.Â