21. This is a well-formed crater with only some modest impact erosion that has softened the features. 22. The rim of this crater is relatively well-defined, and has not suffered significant impact erosion . 23. This is a prominent crater with a well-defined rim and little appearance of wear from impact erosion . 24. This crater has not been significantly worn due to impact erosion , and the features remain well-defined. 25. The outer rim of Ley has undergone impact erosion , and is marked by a number of small craters. 26. This crater has a reasonably well-defined outer rim that has not been significantly degraded through impact erosion . 27. The rim edge is well-defined and has not been significantly degraded as a result of impact erosion . 28. This crater has undergone a moderate amount of impact erosion , although no significant craters lie across the rim. 29. The northern half of the rim is in better shape, although still worn and rounded due to impact erosion . 30. The rim along the western side is less affected by reshaping, although it too is worn by impact erosion .
