Bir Hima Rock Petroglyphs and Inscriptions - Credit: Wikimedia Commons
Bir Hima () is a rock art site in Najran province, in southwest Saudi Arabia, about north of the city of Najran. An ancient Palaeolithic and Neolithic site, the Bir Hima Complex covers the time period of 7000–1000 BC. Bir Hima contains numerous troughs whose type is similar from North Arabia to Yemen. Read more on Wikipedia
Source: en.wikipedia.org