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Flooded Firdousi
Firdousi crater, located close to Mercury's equator, is a flat-floored crater that may have been filled with volcanic material subsequent to its formation. Although many craters on Mercury are filled with impact melt, the shallow depth of Firdousi suggests that lava is the culprit, almost entirely obscuring its central peak and covering many of the landslide deposits around the crater's inner wall. Firdousi is also surrounded by prominent secondary crater chains, many of which have haloes of high-reflectance, relatively blue ejecta.
Date acquired: August 27, 2012
Image Credit: NASA/Johns Hopkins University Applied Physics Laboratory/Carnegie Institution of Washington