AS17-140-21355 (7-19 Dec. 1972) --- This picture of the lunar surface was taken from the window of the lunar module at the Taurus-Littrow landing site. Astronauts Eugene A. Cernan and Harrison H. Schmitt were inside the lunar module preparing for the mission's third spacewalk. Tracks made by lunar roving vehicle (LRV) and the astronauts' bootprints from earlier spacewalks are seen in the foreground.