AS16-114-18422 (21 April 1972) --- A view of Plum Crater, which was visited by the two moon-exploring crewmen of the Apollo 16 lunar landing mission, on their first extravehicular activity (EVA) traverse, April 21, 1972. The Lunar Roving Vehicle (LRV) is parked on the far side of the crater, which measures approximately 40 meters in diameter. While astronauts John W. Young, commander; and Charles M. Duke Jr., lunar module pilot; descended in the Apollo 16 Lunar Module (LM) "Orion" to explore the Descartes highlands landing site on the moon, astronaut Thomas K. Mattingly II, command module pilot, remained with the Command and Service Modules (CSM) "Casper" in lunar orbit.