Layers may form from volcanoes, the wind, or by deposition under water. Arabia Terra is large upland region, heavily eroded, densely cratered, and possibly the oldest terrain on the Red Planet.
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The objective of this observation is to examine layers exposed in small blocks and in a butte in eastern Arabia Terra, in the Northern Hemisphere of Mars.
Image: NASA/JPL/University of Arizona https://www.uahirise.org/hipod/ESP_065168_1915
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