This map shows the geology in and around Tranquillity Base where Apollo 11 landed, near the western end of early Apollo landing site 2 (see index map), in the equatorial belt of the Moon. The Sabine D region is in the southwestern part of the Mare Tranquillitatis. Most of the region lies within the Julius Caesar Quadrangle (LAC 60) mapped at 1:1,000,000 by Morris and Wilhelms (1967).