The mountainous outcrops of Jebel Ouenat (Auenat) rise 1,830 m (6,000 ft) above the barren, uninhabited plains of the Libyan Desert. One of the wadis on the western side is the site of a permanent oasis where prehistoric petroglyphs may be found. The frontiers of Libya, Egypt, and Sudan meet amidst the mountains, which are remnants of an ancient granitic dome. Rivers of sand meander around them, swept across the desert pavement by northeasterly winds. False-color satellite image courtesy of USGS.