The crescent-shaped holes were formed on the surface of Mars as a result of lava overflowing the sand dunes and the subsequent blowout of sand from under the formed hard shell by the wind.

There are two areas with many formations of these kind: the Noctis Labyrinth, the largest labyrinth of the Red Planet (480 ghost dunes) and Hellas Planitia (300).

Scientists believe that the remnants of Martian bacteria could remain in their depths.

The highest mountain not only of Mars, but also among all the planets of the solar system - its absolute altitude is more than 21 km!

With a diameter of 550 km, Olympus occupies such a huge area that it will not be possible to see it completely from the surface of the planet.

But it is impossible to overlook when approaching from space - the mountain will appear before the eyes of Mars colonizers in the form of a gigantic, almost flat plane.

A giant network of canyons of tectonic origin, located just below the equator of Mars.

Its length is 4,500 km, and its depth reaches 11 km, which is about 10 times the length and 7 times the depth of the Great Canyon in Arizona, the largest on Earth.

In the footage taken from the orbit of the Red Planet, the Valles Marineris looks like a large scratch from a clash with some large object.