This is an ancient and heavily worn formation that is now little more than an irregular depression in the surface.

The lavas appear to partly fill a large, irregular topographic depression that existed in Noachian times.

Josef saw six heavy but irregular depressions, three on each side, making a progression to and into the stream.

This formation has been heavily eroded and reshaped by subsequent impacts, leaving an irregular depression in the surface.

It is now an irregular depression in the surface, with worn, uneven features.

It consists of two irregular but sharp-edged depressions, each containing the small figure of a dancer.

This crater has been heavily damaged by subsequent impacts, leaving little more than an irregular depression in the surface.

This is a heavily worn and eroded crater that is now essentially a wide, irregular depression in the rugged lunar surface.

This is a heavily damaged crater that now appears as little more than an irregular depression in the surface.

After twenty or thirty meters, Vestabule halted at an irregular depression in the wall.