Yemen Terrain : narrow coastal plain backed by flat-topped hills and rugged mountains; dissected upland desert plains in center slope into the desert interior of the Arabian Peninsula.

Resources : petroleum, fish, rock salt, marble; small deposits of coal, gold, lead, nickel, and copper; fertile soil in west.

Natural Hazards : sandstorms and dust storms in summer.

Population : 22,230,531 (July 2007 est.).