Moon

There is a bright 'line' leading away from a crater with a prominent central mountain to the lower part of the image. The 'line' is an escarpment known as Rupes Altai which is approximately 275 miles long. It reaches a maximum height of about 3000 feet. The crater is called Piccolomini, it has a diameter of 54 miles with walls rising to about 12,000 feet above the crater bottom. The central mountains are some 5,000 feet high. Best estimates put it at some 3.5 billion years old! (I feel that old sometimes).