Page "Drygalski (crater)" Paragraph 2
from
Wikipedia
Portions of the interior floor within the inner walls is flat and level, having been resurfaced by lava.
The flattest parts are in the southern and eastern sections of the interior.
The surface is more rugged in the west, and is marked by several small craterlets.
At the midpoint of the interior is a rugged central peak formation with several smaller ridges along the flanks.
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