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| Description: (c) Unusual, Hilly Terrain. What look like tiny, fine-grained wrinkles on this picture are actually closely spaced hills, part of a jumbled terrain that covers nearly 500,000 square km on the opposite side of Mercury from the Caloris Basin. The large, smooth-floored crater, Petrarch, has a diameter of 170 km (106 mi). This impact crater was produced more recently than Caloris Basin Picture Stats: Views: 678 Filesize: 453.61kB Height: 900 Width: 739 Source: https://biology-forums.com/index.php?action=gallery;sa=view;id=16003 |