That's Apollo 15. This is the anniversary as the mission lasted from July 26th to August 7th, 1971. This was the first mission that employed the Lunar Rover. There were a total of four EVAs or Extra Vehicular Activities. There were three moonwalks by Dave Scott and Jim Irwin and a deep space spacewalk by Command Module Pilot Al Worden as he retrieved film from a bay in the spacecraft, while the the spacecraft was between the moon and the earth.
Not an Amateur Radio related post, but I've always loved this photograph.
72 de Larry W2LJ
QRP - When you care to send the very least!