Today's Image of Mars comes from Mars Exploration Rover Opportunity during its fifth Martian winter. This image is a panorama of the rover's view from Greeley Haven during its winter stay at the location, between Sol 2811 (21 Dec 2011) and 2947 (8 May 2012) of its mission. The center of this image is looking North, while South is on both sides of the image. Imagine this image wrapped around you with both ends connected, so that you have a 360 degree view.
Center left in this image you can see the tracks left by MER Opportunity as it navigated through the area and up to Greeley Haven. The tracks have revealed that the bright soil we see over much of the surface is just a thin layer, under which lies darker soil. Future examinations of surface soil will likely require an examination of the top layer of dust and the underlying darker layer because the two layers are distinctly different.
In this image you can see the interior of Endeavour Crater on the right. On the left you can see bright wind blown deposits against an outcrop of Greeley Haven. North, northeast, and east of Greeley Haven you can see even more bright deposits. At the center of the image is a bright patch called North Pole, which MER Opportunity examined in May 2012, as an investigation into bright wind-blown dust.
This panorama is a compilation of 817 different images taken by the rover's panoramic camera. I highly recommend you click on the image so you can see the high resolution version and zoom in on all the amazing features!