Astronaut James B. Irwin, lunar module pilot, works at the Lunar Roving Vehicle (LRV) during the first Apollo 15 lunar surface extravehicular activity (EVA) at the Hadley-Apennine landing site on July 31, 1971. The Lunar Module (LM) "Falcon" is on the left. The undeployed Laser Ranging Retro Reflector (LR-3) lies atop the LM's modular equipment stowage assembly (MESA). This view is looking slightly west of south. Hadley Delta and the Apennine Front are in the background to the left. St. George crater is approximately five kilometers (about three statute miles) in the distance behind Irwin's head. This photograph was taken by astronaut David R. Scott, commander. While astronauts Scott and Irwin descended in the LM to explore the moon, astronaut Alfred M. Worden, command module pilot, remained with the Command and Service Module (CSM) in lunar orbit.