The birthplace of Mahomet, the Holy City and Keblah of the Moslems, the capital of Hedjaz and the true capital of Arabia; in the midst of sandy valleys, and 60 m. distant from Jeddah, its port; a city to which every true Mussulman must make a pilgrimage once in his life; has a population which varies from 30,000 to 60,000. See Caaba .