Chain of pits (including a heart) within Acheron Catena

Chain of pits (including a heart) within Acheron Catena
Chain of pits (including a heart) within Acheron Catena At the center of this image is a heart-shaped pit within Acheron Catena, one of many fissures on the eastern flank of Alba Patera on Mars. The heart is about 2.3 kilometers across at its widest. It was first noticed in a MOC image from Mars Global Surveyor; this image is from CTX on Mars Reconnaissance Orbiter. NASA / JPL / MSSS

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