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Mark Fisher
1999-2008
Mare Imbrium
Sea of Rains
An enormous lunar basin. With a diameter of 1,250 km, the Mare Imbrium is the largest feature of its kind. Indeed, after the Oceanus Procellarum, it is the second largest lunar feature of any kind at all. Its circular perimeter is marked by mountain ranges, and its grey surface is scarred by clefts.
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