This Crater on Mars Traps the Cold, and Remains Filled With Ice

In an May 2019 issue of Astronomy Magazine, there was an image of Koroleve Crater showing an icy surface, but it also was not the best photo quality, so I did some reasearch and came up with the included short video... Water is crucial to our survival should we ever put a research base on the Planet Mars... It is not only necessary for human life, but also for fuel, by breaking down the water (H2O), into its basic components of Hydrogen and Oxygen for return space flights back to Planet Earth... Watch and Listen Full Screen to obtain a fundamental knowledge of this remarkable crater.
Enjoy!

Detail:
"Korolev is an ice-filled impact crater in the Mare Boreum quadrangle of Mars, located at 73° north latitude and 165° east longitude. It is 81.4 kilometres (50.6 mi) in diameter and contains about 2,200 cubic kilometres (530 cu mi) of water ice, comparable in volume to Great Bear Lake in northern Canada. The crater was named after Sergei Korolev (1907–1966), the head Soviet rocket engineer and designer during the Space Race in the 1950s and 1960s.

Korolev crater is located on the Planum Boreum, the northern polar plain which surrounds the north polar ice cap, near the Olympia Undae dune field. The crater rim rises about 2 kilometres (1.2 mi) above the surrounding plains. The crater floor lies about 2 kilometres (1.2 mi) below the rim, and is covered by a 1.8 kilometres (1.1 mi) deep central mound of permanent water ice, up to 60 kilometres (37 mi) in diameter.

The ice is permanently stable because the crater acts as a natural cold trap. The thin Martian air above the crater ice is colder than air surrounding the crater; the colder local atmosphere is also heavier so it sinks to form a protective layer, insulating the ice, shielding it from melting and evaporation. Recent research indicates that the ice deposit formed in place within the crater and was not previously part of a once-larger polar ice sheet. The ice in the crater is part of the vast water resources at Mars poles." Wikipedia