|Petroglyphs: Vantage, Washington|
Petroglyphs of sheep photographed at Gingko State Park, near Vantage, Washington. Image copyright iStockphoto / 63alfred.
|Petroglyphs: Wadi Rum Desert, Jordan|
Petroglyphs of a caravan on a rock wall of sandstone in the Wadi Rum Desert of Jordan. This petroglyph is thought to have been made by ancient Nabatean traders who passed through this area, which is along the route of the Silk Road. Image copyright iStockphoto / Andrey Rykov.
Some trivia: The Wadi Rum area is a favorite place for filming scenes of science fiction films that are set on Mars. Learn more in our "Rocks on Mars" article (the last item at the bottom of the page with a fantastic photo of red sand and red sandstone).
|Petroglyphs: Reef Bay, Virgin Islands|
These petroglyphs were photographed at Reef Bay, Virgin Islands. They are thought to have been carved by the Taino people who were all but driven to extinction when the Spanish arrived in the 1600s. Image copyright iStockphoto / Susanna Pershern.