Ley is a lunar impact crater that is located across the southern rim of the much larger Campbell impact basin. Intruding into the south-southwestern rim of Ley is the slightly larger Von Neumann crater.

The debris from the Von Neumann crater formation has formed a bulging rampart that occupies the southwest interior floor of Ley. The outer rim of Ley has undergone impact erosion, and is marked by a number of small craterlets. The inner wall is also worn, and the interior floor is pock-marked by a number of tiny craterlets. There is a small, cup-shaped crater on the floor to the northwest of the mid-point.

References

Craters on the Moon