Cropped for composition and added labels.

Two lunar craters.....Tycho and Clavius.
Tycho a rather young crater (around 108 million years old), is distinctive due to its ray system forming long spokes.
Clavius gained importance recently due NASA's SOFIA finding water.
Both craters are featured in Kubrik's fictional 2001: A Space Odyssey, where the lunar base was located in Clavius crater and an alien monolith was found buried in the Tycho crater.