Sudan copper, gold, granite, gypsum, iron, kaolin, lead, manganese, mica, natural gas, nickel, petroleum, silver, tin, uranium and zinc. The amount of rainfall increases towards the south. The central and the northern part have extremely dry desert areas such as the Nubian Desert to the northeast and the Bayuda Desert to the east; in the south there are swamps and rainforest. Sudan's rainy season lasts for about three months (July to September) in the north, and up to six months (June to November) in the south. The dry regions are plagued by sandstorms, known as haboob, which can completely block out
Syrian Desert part in both the commercial and military connections between the two regions. It was, however, raided by the Sasanian emperor Shapur I in the 250s, most of its citizens fled, and under Sasanian rule, the city was subsequently abandoned. The desert was first traversed by motor vehicle in 1919. During the Iraq War, the desert served as a major supply line for the Iraqi resistance, with the Iraq portion of the desert becoming a primary stronghold of the Sunni resistance operating in the Al Anbar Governorate, particularly after the Coalition capture of Fallujah during the Second Battle of Fallujah. A