Curious Martian Landform
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Curious Martian Landform

October 26, 2012
Nilosyrtis Mensae is an ancient terrain with a wonderful variety of landforms and rock types.

What is this circular landform? It probably got its shape from an impact crater long ago, but was subsequently eroded and filled in and eroded again, so that now it is a low mesa surrounded by a boulder-rich geologic unit.

Written by: Alfred McEwen

Credits: NASA/JPL/University of Arizona

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