[5] Ancient history of human occupation of this habitat is credited to its resources of wild life, water and the limestone terrain.

[6] Its rich heritage of rock petroglyphs caught the attention of Saudi Arabia's Department of Antiquities only after 1976 when Jubba and other sites were investigated.

One of the expedition members investigating this art form found a site west of the ancient wells of Bir Hima where he recorded 250 images.

[8] At this important rock art site, apart from depictions of humans, giraffes and other animals, the sixth century inscriptions of Dhu Nuwas, a Himyarite King who occupied Najran, are also recorded.

[11] Thousands of inscriptions have also been found, in various scripts including the al-musmad alphabet, Aramaic-Nabatean, South Arabian, Greek and Islamic.