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  • File:ESP 011425 1775newcrater.jpg
    ...s the dark surface that lies under the dust. It is the dark volcanic rock basalt.
    (1,680 × 666 (1.18 MB)) - 05:57, 17 April 2020
  • File:55095 2170dunelinecolor.jpg
    ...Wish program Dark color is from dark minerals in the volcanic rock called basalt.
    (1,307 × 618 (254 KB)) - 08:38, 22 October 2018
  • File:26270 1820layerscolor.jpg
    Layers The dark areas are probably basalt sand. Location is Firsoff Crater, western Arabia Terra in the Oxia Palus qu
    (1,307 × 618 (321 KB)) - 06:49, 10 April 2019