Petroglyphs make a fine late-afternoon foreground for an otherwise ordinary, small cumulonimbus that developed over the next mountain range. To make this rock art, Hohokam people, who occupied this area around 1600-400 years ago, used stone tools to scrape through the “desert varnish” coating, exposing unweathered sandstone beneath. The motivation for these petroglyphs, and their intended message, remains unknown.
14 WNW Tucson AZ (15 Jul 19) Looking ENE
32.2911, -111.2084Cumulonimbus beyond Petroglyphs
Petroglyphs make a fine late-afternoon foreground for an otherwise ordinary, small cumulonimbus that developed over the next mountain range. To make this rock art, Hohokam people, who occupied this area around 1600-400 years ago, used stone tools to scrape through the “desert varnish” coating, exposing unweathered sandstone beneath. The motivation for these petroglyphs, and their intended message, remains unknown.
14 WNW Tucson AZ (15 Jul 19) Looking ENE
32.2911, -111.2084