ИСТИНА

One of distinctive things for the high northern latitudes of Mars is presence of remnant mas- sifs of layered deposits around the northern polar cap. These massifs could be remnants of polar layered de- posits (PLD) of northern polar cup. For measuring of these thicknesses and volume, the laser altimeter data (MOLA) and radar data (SHARAD) were used. Explore this features provide us to talk about evolution of polar cap and volume of surface ice in this latitudes.