The team discovered 15 new rock art sites in an arid valley known as Wadi Abu Dom, some 18 miles (29 kilometers) from the Nile River. It’s an arid valley that flows with water only during rainy periods. Many of the drawings were carved into the rock faces — no paint was used — of small stream beds known as “khors” that flow into the valley.
Some of the sites revealed just a single drawing while others have up to 30, said lead researcher Tim Karberg, of the Westfälische Wilhelms-Universität Münster in Germany.
Story: Owen Jarus, LiveScience | Photo: Tim Karberg/Westfälische Wilhelms-Universität Münster