Harpalus crater
Harpalus crater The Moon's Harpalus crater, in a photo from Lunar Reconnaissance Orbiter. NASA / GSFC / ASU

The Moon's Harpalus crater, 39 kilometers in diameter, has a terraced wall and a central peak structure. Smaller craters to the north and north-northwest (Harpalus B and C, at 8 and 10 kilometers in diameter, respectively) have simple bowl shapes.