"Signal Hill Petroglyph."
Roughly 1,000 years ago, an unknown Hohokam Indian artist pecked this 18" wide spiral into a boulder. This site near Tucson preserves dozens of petroglyphs, giving it the modern name, "Signal Hill."
"Signal Hill Petroglyph."
Roughly 1,000 years ago, an unknown Hohokam Indian artist pecked this 18" wide spiral into a boulder. This site near Tucson preserves dozens of petroglyphs, giving it the modern name, "Signal Hill."
