Today's Image of Mars comes from THEMIS and shows a filled crater in the Tharsis Quadrangle. The only indication that this had once been a crater is what remains of the rim.
Before a crater becomes filled like one below the lava must break through the raised rim by pushing through gaps or weaknesses. Once it does this the lava pours into the crater, widening the gap in the rim and filling the crater.
Clicking on the image will take you to the original high resolution version from THEMIS.
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