An animation based on images taken by the ESA's Mars Express showcases the 82-kilometre-wide Korolev Crater on Mars.<br />Located in the northern lowlands of the Red Planet, south of the large Olympia Undae dune field that partly surrounds Mars’ north polar cap, this well-preserved impact crater is filled with water ice all year round. The crater’s floor lies two kilometres below its rim, enclosing a 1.8 km thick domed deposit that represents a large reservoir of non-polar ice on Mars.
