Ur became the capital of the Mesopotamian Civilization around 2100 B.C. The site of Ur is known today as Tall al Muqayyar, in South of Iraq. Ur was the principal center of worship of the Sumerian moon god Nanna and of his Babylonian equivalent Sin. Ur was already a center of wonderful and highly advanced material and moral culture few thousands of years before the rise of Greek and Roman civilizations. Ur was one of the first village settlements founded (circa 4000 BC) by the so-called Ubaidian inhabitants of Sumer. Ur is known in the Bible as Ur of the Chaldees. The first king of Ur was known as Mes-Anni-Padda (Mesannepada, or Mesanepada, etc). The ruins of Ur were found and first excavated by the British consul J.E. Taylor. Ur had three dynasties of rulers. Ur stood strategically on a promontory between an arm of the Euphrates River and a navigable canal, and it had two harbors. Ur, at it's height, occupied 216 acres, and the population is estimated at some 34,000 people. According to the Bible, Ur was the home of Abraham before his journey to Palestine. Ur's most notable remaining ruin is of the ziggurat, a temple of Nanna, the moon god in Sumerian mythology. Excavations of Ur from 1922 to 1934 were funded by the British Museum and the University of Pennsylvania and led by the archaeologist Sir Charles Leonard Woolley. From excavations of Ur from 1922 to 1934 a total of about 1850 burials were uncovered, including 16 that were described as "royal tombs" containing many valuable artifacts.