THEMIS Image of the Day, May 25, 2016. Today’s image shows part of Olympica Fossae. The large depression in the bottom half of the image is part of the fossae itself, and is probably a graben. Graben are formed when a block of material is down dropped between paired faults. In the top portion of the image there are several small channels. Olympica Fossae is located in the Tharsis volcanic region between Olympus Mons and Alba Mons.
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