These eight petroglyph sites provide an illustrated insight to our distant past.
Rock art is one of the most fragile cultural treasures in the United States and some people are destroying them with their guns.
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 between 10,500 and 14,800 years ago.
Three years ago the artist Kevin Sudeith left New York City to create stone carvings on immovable rock outcroppings across Canada and the continental US. A modern-day petroglyphist, he has also created more than two dozens images on rocks in undisclosed locations in New York. While this isn’t exactly legal, it can be viewed as a kind of thoughtful and permanent graffiti.
Thieves have stolen and vandalized dozens of ancient petroglyphs in Bishop, California — “the worst act of vandalism ever seen” at the site, which consists of 750,000 acres of federally owned land, said US Bureau of Land Management archaeologist Greg Haverstock.