petro glyphs on rock. people who lived in the area left their mark as etchings on rocks.

area arizona beautiful bentonite blue bluish brown chinle clay colors coneshaped desert erodible etchings forest formation glyphs hard harsh inhospitable lavender left lived mark mesa nature painted patina people petrified petro pueblo pueblos puerco red rock rocks sediment spectacle tepee their trail triassic varnish white who wonderland