English: Old Marib, Yemen. The ruins of multi-story mud-brick buildings can be seen on the top of a mound, or tell, formed from the accumulated man-made deposits of the central part of the ancient city. While the city has been inhabited since at least the firast millennium BCE, the standing buildings are of relatively recent date, some still inhabited (ca. 2006). The exposed stone walls in the foreground were part of an outlying area of the ancient city. The modern city of Marib is located about 3.5 kilometers to the north.