The Great Gallery in Horseshoe Canyon is one of the most significant rock art sites in North America. It is in a remote area of Canyonlands National Park, Utah. A trip there requires plenty of ...

HORSESHOE CANYON, Utah — In a remote arm of Canyonlands National Park, deep inside a warren of rock and sand, is one of the greatest and most mysterious collections of ancient art in North America.

(CNN) — Researchers have uncovered links between the precursor to the world’s oldest writing system and the mysterious, intricate designs left behind by engraved cylindrical seals that were rolled ...

Editor's Note: Happy Throwback Thursday (#TBT). This is one of our most popular stories from 2014. FOREST GROVE – Growing up on a ranch outside Lewistown, Macie Ahlgren used to enjoy playing at a ...

But above all, call it communication. At least that's the way Anne Whitfield views the mysterious pieces of the distant past that have mesmerized her for the past three decades. They're petroglyphs ...

Among the mysteries of how ancient people created structures to mark the solstice and equinox with astonishing accuracy, this one is central: How did they determine the dates of those astronomical ...

BOISE, Idaho — The City of Rocks National Reserve's famous emigrant signatures from the Oregon Trail area and prehistoric pictographs were vandalized sometime over the weekend, according to the ...