26 September 2004
This blue wide angle Mars Global Surveyor (MGS) Mars Orbiter Camera (MOC) image shows the frost-covered rims of Lomonosov Crater in late martian spring. At the north (top) end of the image, low, ground-hugging fog can be seen in association with the retreating seasonal polar cap. Lomonosov Crater is about 150 km (93 mi) in diameter and located at 65°N, 9°W. The image is illuminated by sunlight from the lower left.