This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated. (CNN) — From a distance they look like ...

In the parched desert landscape of Nevada, near the now-dry Lake Winnemucca, lies one of the oldest and most mysterious forms of human expression in North America. Petroglyphs etched into the rock ...

Ancient North Americans gouged elaborate rock art into a heap of big boulders northeast of Reno, Nev., more than 10,000 years ago and perhaps 15,000 years ago. That makes the carvings the oldest known ...

Petroglyphs in western Nevada have been identified as the oldest of their kind in North America. Researchers at the University of Colorado Boulder conducted a study that dates the rock carvings to ...

Ancient petroglyphs, some believed to be up to 7,000 years old, have been vandalized on federal land in the Eastern Sierra Nevada, officials reported. The petroglyphs, called “one of the most ...