Mohenjo-daro was one of the great cities of the ancient world. Along with its sister city, Harappa, 350 miles to the northeast, it dominated the Indus Valley between 2600 and 1900 B.C. During this period, Mohenjo-daro and Harappa were probably the largest cities in the world. In translation, Mohenjo-daro means “Hill of the Dead.” Strangely for a city that once housed perhaps 40,000 souls in its heyday, only about three dozen skeletons have been found in the ruins. Even more strangely, most of the skeletons were discovered laying unburied in contorted poses.