The Apollo 15 landing site was in the Apennine Highlands, and close to Hadley Rille - a long, narrow winding valley. Approximately 76 kg of lunar material including soil, rock, core-tube and deep-core samples were returned to Earth.
This mission was the first flight of the Lunar Roving Vehicle which allowed the astronauts to venture further from the Lunar Module than in previous missions. During three periods of extravehicular activity, or EVA, on July 31st, and August 1st and 2nd, Scott and Irwin completed a record 18 hours, 37 minutes of exploration, travelled 17.5 miles in the first car that humans had ever driven on the Moon.
Apollo 15 was launched on July 26th 1971.