light, or the moon city, a city "of the Chaldees," the birthplace of Haran (Gen. 11:28,31), the largest city of Shinar or northern Chaldea, and the principal commercial centre of the country as well as the centre of political power. It stood near the mouth of the Euphrates, on its western bank, and is represented by the mounds (of bricks cemented by bitumen) of el-Mugheir, i.e., "the bitumined," or "the town of bitumen," now 150 miles from the sea and some 6 miles from the Euphrates, a little above the point where it receives the Shat el-Hie, an affluent from the Tigris. It was formerly a maritime city, as the waters of the Persian Gulf reached thus far inland. Ur was the port of Babylonia, whence trade was carried on with the dwellers on the gulf, and with the distant countries of India, Ethiopia, and Egypt. It was abandoned about B.C. 500, but long continued, like Erech, to be a great sacred cemetery city, as is evident from the number of tombs found there. (See ABRAHAM.)