NASA has shared a new image taken by the Mars Recognition Orbiter (MRO), which shows impressive icy sand dunes within a pit about five kilometers in diameter.
The image reveals some details about the construction of ravines on the red planet that melt snow as the seasons change.
The MRO spacecraft has been flying on Mars since 2006 and sending photos to Earth and revealing new details about the planet.
The surface of the main dune area has a series of darker polygon patterns that, according to NASA, may be the result of a seasonal frost process.
Many of the deepest dune slopes pointing into the wind have narrow grooves that suggest the beginning of the construction of the ravines.
The image was taken at a distance of about 315 km from the surface of Mars by a powerful HiRISE high-resolution camera installed in a space probe. (With agency Sputnik Brasil)
