Another large crater, Pushkin, is 240 km in diameter and occurs at the map boundary at lat 65 S., long 25 . Both Bach and Bernini display extensive fields of secondary craters. An unusual area between lat 69 and 80 S. and long 30 and 60 consists of young, relatively smooth plains marked by many flat-topped ridges unlike any seen in other areas of Mercury. The most common terrain units in the region are the plains units, which display a wide range of small-crater densities. All attributes created during the creation process were verified by displaying the lines in both the database and the spatial coverage, but no formal tests were performed.
Line geometry is topologically clean.
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