Orange lunar soil in Shorty Crater. This soil was found by the Apollo 17 astronaut and geologist Dr Harrison Schmitt during his second moonwalk at the Taurus-Littrow landing site. The tripod is a gnomon, used to indicate the angle of the Sun, scale and lunar colour. Schmitt, along with fellow astronaut Eugene Cernan, landed on the Taurus-Littrow region of the moon on 11 December 1972, and spent 75 hours on the surface. Apollo 17 was the last Apollo mission, and Schmitt and Cernan are the last people to have walked on the Moon.