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October 8, 2008
This image spans the floor of Ius Chasma's southern trench. Ius Chasma is located in the western region of Valles Marineris, the solar system's largest canyon. This canyon is well known for its fine stratigraphic layers modified by wind and water.
Mars, lus Chasma floor, Mars Reconnaissance Explorer, 2008
Ius Chasma is believed to have been shaped by a process called sapping when water seeped from the layers of the cliffs and evaporated before it reached the canyon floor.
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I'm just stunned by the detail and the sharpness of these images.