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
Jabal Aja Protected Area Area because of the richness of its plant life and the presence of many endemic and relict plant species. The reserve offers a refuge to plants from the Mediterranean and Irano-Turanian Regions in an area that otherwise forms part of the Saharo-Arabian Region. About 355 species of plant have been recorded in the reserve, including the plants found in the adjoining desert area of An Nafud. The plains have deep sandy-loam soils and the dominant plant is "Haloxylon salicornicum", with the desert gourd being common and "Asphodelus tenuifolius" occurring in depressions. The annual plants "Stipa tortilis", "Picris cyanocarpa" and "Anthemis"