This Apollo 10 stereo pair (AS10-32-4848 & 4849) shows the Apollo 11 landing site in the Sea of Tranquility as indicated by the yellow dot. The area immediately around the landing site is flat and devoid of craters and so was considered safe to land on. Elsewhere we see different-sized craters, some crater chains, and a few hills and rilles (long narrow valleys). The large crater at the bottom is Moltke, about 4 miles (6km) in diameter. Below Moltke, the shallow Hypatia rilles that stretch 75 miles (120km) across the lunar surface can be seen.