Hypatia Rille and crater Moltke

This look at the southwestern Sea of Tranquility on July 20 shows the shadow of the command and service modules, with the lunar module docked to it just out of sight at the bottom. At upper left-center is the linear, trench-like geographic feature known as Hypatia Rille, and just to the right of that is the crater Moltke, code-named "Chuck Hole" (also pictured in the previous slide, with the New York overlay).

Aldrin: "In the final phases of the descent after a number of program alarms, we looked at the landing area and found a very large crater. This is the area we decided we would not go into; we extended the range downrange. The exhaust dust was kicked up by the engine, and this caused some concern I that it degraded our ability to determine not only our altitude in the final phases but also our translational velocities over the ground. It's quite important not to stub your toe during the final phases of touchdown."