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 largely intact as the desert is uninhabitable. Therefore, habitats are not threatened by agriculture, but are damaged by introduced species, particularly rabbits and feral camels. The only human activitiy in the desert proper has been the construction of the gas pipelines, while the country on its fringes has been used for cattle grazing and contains towns such as Innamincka. Mound springs and other waterholes are vulnerable to overuse and damage. Protected areas of the ecoregion include the Simpson Desert, Goneaway, Lochern, Bladensburg, Witjira and Kati Thanda-Lake Eyre National Parks as well as the Munga-Thirri—Simpson Desert Conservation Park, Innamincka Regional Reserve