Portion of the global topography of Mars from the Mars Global Surveyor (MOLA) and Mars Express (HRSC) spacecraft (source: https://astrogeology.usgs.gov/search/map/Mars/Topography/HRSC_MOLA_Blend/Mars_HRSC_MOLA_BlendDEM_Global_200mp)
Overlay is a 5-color density slice from the topography; this also indicates elevation: blue for the lowest elevations, greens for higher, with tan on the highest points (higher elevations aren't present in this area).
This section is the southern hemisphere (0° - 88° S) from longitude 90°E to 180°E, 10x vertical exaggeration.