Tanumah Corridor

The country between Tanumah and Mashdhubah lies on the margins of the Qasim oasis settlements and the sandy tracts of northern Najd. At its western end, al-Asyah was known as an-Nibaj, a stopping place on the route from Basra. Farther east the land approaches the long arc of ad-Dahna, where ridges of sand interrupt the plateau and separate scattered localities.