Where is the Korolev Crater?
The impact crater Korolev is situated in the northern lowlands of Mars, south of the large Olympia Undae dune field that partly surrounds the north polar cap. Korolev’s crater floor lies two kilometers below its rim, and is covered whole year round with a large central mound of water ice. This 1.8-kilometer-thick domed deposit represents a large reservoir of non-polar ice on Mars.