Dammam, Al-

Also spelled  Damman  city, eastern Saudi Arabia. It lies on the Persian Gulf northwest of Bahrain Island and forms a larger metropolitan and industrial complex with Al-Khubar, Al-Qatif, and Al-Zahran. The discovery of immense oil reserves in the locality in 1938 led to the radical transformation of the once small coastal settlement into a boomtown that is now a major seaport, a petroleum and natural