Just west of Gila Bend, a small sign along Interstate 8 points toward Painted Rock Petroglyph Site. What it doesn’t explain is the sheer scale of what’s hidden there. On a low hill covered in boulders ...

Editor’s Note: The Painted Bluffs in Concho County are the most significant native pictograph site in the Great State of Texas, and although they are well documented by key intrastate websites, this ...

Centuries before cellphone photos and social media sites, residents of what is now Tucson had their own way of posting scenes from daily life: They pecked petroglyphs into rocks. These petroglyphs, ...

Adam Roy is the executive editor of Backpacker. He lives in Colorado’s Front Range, where he spends his free time hiking, climbing, and running his home mountains. What finally did them in was a ...