Apollo 15 lunar surface exploration, July 1971. US astronaut David Scott (with gnomon and tongs in his left hand) bending over the rock that was sampled at Station 2 during the Apollo 15 first lunar surface extravehicular activity (EVA-1). In the foreground is a 6-metre-wide crater. Soil near the block and beneath it were also sampled. Apollo 15 was the fourth manned mission to land on the Moon. The lunar lander 'Falcon' touched down in the Hadley region of the Moon on 30 July 1971. Astronauts David Scott and James Irwin spent a total of 18.5 hours outside their spacecraft, carrying out three exploration trips (EVAs) with the Lunar Roving Vehicle (used for the first time on this mission). Photographed by Irwin on 31 July 1971.