Maunder Crater (Natural Colors + MULTISPECTRUM; credits: ESA & Lunexit)

The above image shows the striking Maunder crater lying at approx. 50° South Lat. and 2° East Long., in the Noachis Terra Region on Mars.
The High Resolution Stereo Camera (HRSC) on ESA’s Mars Express orbiter took pictures of the Noachis Terra Region during orbits 2412 and 2467 on 29 November and 14 December 2005, respectively, with a ground resolution of approx. 15 mt/pixel.
The Sun illuminates the scene from the North-East (top left in the image).

Maunder crater, named after the British Astronomer Edward W. Maunder, is located halfway between Argyre Planitia and Hellas Planitia on the Southern Highlands of Mars.
With a diameter of 90 Km and a depth of barely 900 mt, the Crater is not one of the largest impact craters on Mars at present, but it used to be much deeper. It has since been filled partially with large amounts of material.