Cusanus is a lunar impact crater that is located near the northeastern limb of the Moon.

In this location the crater appears very foreshortened when observed from the Earth, and its visibility is affected by libration.

The terraces are still visible along the inner walls, although they are less sharply defined compared to younger crater formations.

A pair of tiny craters form a notch along the eastern rim, and there is a slight inward bulge along the western inner wall.

[1] By convention these features are identified on lunar maps by placing the letter on the side of the crater midpoint that is closest to Cusanus.