Sakakah years. It is the home of many historic & prehistoric archaeological sites such Za'bal Castle & Well, the Omar ibn Al-Khattab Mosque, located in Dowmat Al-Jandal and Mard Castle (just south of Sakaka). There are also the ancient Rajajil standing stones in Sakaka, dating back nearly 6,000 years. Köppen-Geiger climate classification system classifies its climate as hot desert (BWh). Sakakah Sakakah () is a city in northwestern Saudi Arabia and is the capital of Al Jawf Province. It is located just to the north of the An Nafud desert. Sakakah had a population of 242,813 at the 2010 Census. Sakakah
Simpson Desert decades occurred during 2009-2010, and has seen the Simpson Desert burst into life and colour. In early March 2010, Birdsville recorded more rain in 24 hours than is usual in a whole year. Rain inundated Queensland’s north-west and Gulf regions. In total, 17 million megalitres of water entered the State’s western river systems leading to Lake Eyre. In 2010, researchers uncovered the courses of ancient river systems under the desert. The Simpson Desert is also a large part of the World Wildlife Fund ecoregion of the same name which consists of the Channel Country and the Simpson Strzelecki Dunefields bioregions