HiRISE 3D: Maja Valles
Maja Valles are a large system of ancient outflow channels that may have been formed through water erosion, although parts of the system have been buried by thin volcanic debris.
https://www.uahirise.org/anaglyph/ESP_073719_1980_ESP_073864_1980_RED
NASA/JPL-Caltech/UArizona
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