Multiple groups, including the Ancestral Puebloans and the Havasupai people, created petroglyphs from 2000 BCE all the way up to 1950 when Grand Canyon National Park was established. The symbols ...

Discovering the petroglyphs of Nine Mile Canyon below: Discovering the petroglyphs of Nine Mile Canyon ...

At Boca Negra Canyon, three short trails lead to a combined 100 petroglyphs. Piedras Marcadas Canyon offers a chance to see the most petroglyphs, with 400 scattered over a 1.5-mile (roundtrip ...