Please watch the Martian crater 2 km deep, 81.4 km in diameter, filled with ice that will never dissolve

The mission Mars Express sends extremely clear images, with panels of 1 pixel resolution containing up to 21 meters of field.

Having liquid water on Mars is still controversial, but it can be affirmed (and there is evidence to support it) that water is frozen on Mars. The latest photos from the European Space Agency's Mars research facility further affirm that, with great photographs taken from above.

Satellites flying around Mars captured the Korolev crater, 81.4 km in diameter and south of the Olympia Undae sand dunes, near the North Pole of Mars. Almost all the craters are filled with ice.

Like Earth, Mars also has seasons and like the Earth, warm seasons will melt ice. But everything was different at the Korolev hole, created by a long-standing impact and named after Soviet rocket engineer Serger Korolev.

It has a distinct geographical feature called "cold trap - cold trap", exactly what the name means. The ground layer of this area is very deep, up to 2 km from the edge of the meteorite pit. And from that base, a glacial arch floats, 1.8 km thick and has a diameter of 60 km. It is estimated that the volume of the ice block is 2,200 km3, it is unclear how much of it is Mars dust.

When the air on Mars glides through the ice, it cools and sinks, forming a layer of cold air right above the ice surface. Because the air transmits very poorly, the cold air layer becomes a natural insulation, preventing the ice from contacting the hot air, avoiding the turning of Korolev ice hole into Lake Korolev.

Central in the North Pole region, there is another ice hole - Louth crater with a diameter of only 36 km.

The Mars Express project will celebrate 15 years of satellite operation on the 25th, and on the occasion of birthdays and projects, send gifts to all humanity. Last year, guards flew several times through the Korolev meteorite, capturing images of extremely high resolution.

The photo below is a combination of 5 photo bands of different angles, with each pixel equivalent to 21 meters of field.