This image shows the relative heights of a region in the southern highlands of Mars, focusing on a 48 km-wide crater (left) that is filled with wind-blown dunes.
As indicated in the key at top right, whites and browns/reds represent the highest terrain, while blue/purple is the lowest (values are marked on the scale).
The colour-coded topographic view is based on a digital terrain model of the region, from which the topography of the landscape can be derived.
The region was imaged on 16 May 2017 during Mars Express orbit 16934. The ground resolution is about 13 m/pixel and the images are centred on 248°E / 59°S. North is to the right.