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# Long description

This figure is a map of Mars showing surface topography. Latitude and longitude are labelled, with the equator running across the centre of the image, horizontally. The map is colour coded. Blue and green areas are low elevation, red and brown areas are high elevation. The image can be divided into three areas. Across the top quarter (north) there is an area of low elevation, represented by blues and greens. Across the bottom quarter (south) there is an area of high elevation represented by reds and oranges. Between these areas there are regions of varying topography. Towards the left hand side of the image is a distinct red-brown region, which has some white patches. This represents very high elevations, in this case Olympus Mons volcanic region. To the right of the image is a distinct blue circular region, which represents a low lying impact crater.