This is a prominent crater with a well-defined rim and little appearance of wear from impact erosion.

This crater has a well-defined rim that has not suffered much wear from impact erosion.

C. Mayer is a relatively young formation, with a sharp-edged and well-defined outer rim.

Nearly all Hell craters are relatively flat and shallow, with a sharp, well-defined rim and a typical diameter-to-depth ratio of about 10.

This crater has a well-defined and somewhat uneven rim that is roughly circular in shape.

Schubert is a nearly circular crater formation that has not suffered significant erosion from subsequent impacts, and retains a well-defined rim.

This is a relatively fresh crater with a well-defined rim and interior that have not been significantly worn.

This is a relatively youthful crater, with a well-defined outer rim and a terraced inner wall.

This crater has a well-defined outer rim that is only mildly worn by impact erosion.

This crater has a reasonably well-defined outer rim that has not been significantly degraded through impact erosion.