This property includes two components situated in a desert landscape: Jabel Umm Sinman at Jubbah and the Jabal al-Manjor and Raat at Shuwaymis. A lake once situated at the foot of the Umm Sinman hill range that has now disappeared used to be a source of fresh water for people and animals in the southern part of the Great Narfoud Desert. The ancestors of today’s Arab populations have left traces of their passages in numerous petroglyphs and inscriptions on the rock face. Jabal al-Manjor and Raat form the rocky escarpment of a wadi now covered in sand. They show numerous representations of human and animal figures covering 10,000 years of history.

Źródło: World Heritage Convention
http://whc.unesco.org/en/list/1472