The Poles of Mars

The Mercator Projection distorts Polar Regions beyond recognition, so Polar Projection Maps are commonly made separately. These MOLA shaded topography images of Mars's North and South Polar Regions are stereographic projections, from Latitudes 72° N and S towards the respective Poles. The line of 0° Longitude is to the bottom of the North Pole images, and toward the top of the South Pole image.
Both Poles are covered by layered ice caps with smooth undulating surfaces. The North Polar Cap sits of a flat plain, while the South Polar Cap sits on heavily cratered land.