Unnamed Crater covered by Fog (Original NASA/MGS/MSSS b/w Frame)

Caption NASA originale:"Craters near the edge of the retreating South Polar Seasonal Frost Cap often have fog in them, this time of year. This MGS-MOC wide angle red image was acquired on July 13, 2003. It shows an Unnamed Crater, roughly 36 Km across, that is enveloped in Fog.
This picture was taken as a context frame for a high resolution view that was intended to show Dunes on the Floor of the Crater. That high resolution view was frustrated by thick Fog that hid the Dunes from view. This wide angle context frame shows that winds from the lower right (South/East) were blowing over the Crater, causing the Fog to bunch up in a wavy, rippled pattern. Winds streaming off the South Polar Cap toward the North create a variety of patterns in the Fogs formed by Water Ice or Vapor as the Seasonal Cap retreats during Southern Spring.
This picture shows an area located at about 66,4° South Lat. and 208,6° West Long; sunlight illuminates the scene from the upper left (North/West)".