A Large Crater with a Floor Partially Covered by Large Numbers of Coalesced Hollows
Here a high-resolution monochrome image has been combined with a lower-resolution enhanced-color image. The hollows appear in cyan, a result of their high reflectance and bluish color relative to other parts of the planet. The large pit in the center of the crater may be a volcanic vent, from which the orange material erupted.
Credit: Courtesy of Science/AAAS