“A lot of the petroglyphs show animal and human figures,” he said. “We see such images on Hohokam pottery from about (A.D.) 800 to 950, so we’re pretty sure that a lot of those glyphs date ...

This picture shows what a part of the Hohokam's Honey Bee Village in today's Oro Valley might have looked like around A.D. 1125. The Hohokam early on used pit-house construction.

With over a million petroglyphs, some depict extinct animals, such as the Tasmanian tiger. Others depict the world's earliest known representations of the human face. "It goes back older than art.

The site contains 4,500 petroglyphs carved in the rocks during the Neolithic period dated about 6-7 thousand years ago and located in the Republic of Karelia in the Russian Federation. It is one of ...

At White Sands National Park, tiny gypsum grains sparkle as they reflect the sun. But under the surface, you’ll find human history etched below.