Diameter 55 km | ||
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Beckett is a pit-floored crater on Mercury, which was discovered in January 2008 during the first flyby of the planet by MESSENGER spacecraft. Its floor is not smooth and displays a telephone or arc-shaped collapse feature, which is also called a central pit. The size of the pit is 35 × 7.5 km. Such a feature may have resulted from the collapse of a magma chamber underlying the central part of the crater. The collapse feature is an analog of Earth's volcanic calderas.
References
Beckett (crater) Wikipedia(Text) CC BY-SA