North Polar "Frosted Dunes" (Original NASA/MGS/MSSS b/w Frame)

Caption NASA originale:"This MGS-MOC image shows Dunes in the North Polar Region of Mars. The Dunes in this scene are covered by a layer of Carbon Dioxide Frost that accumulated during the Winter in 2005. Dark spots indicate areas where Frost has begun to sublime away. In Summer, the Dunefield will be dark, as all of the Frost will be gone and the Iron- and Magnesium-bearing Silicate Sands will be exposed".

Location near: 81,9° North Lat. and 226,1° West Long.
Image width: ~3 Km (~1,9 mi)
Illumination from: lower left
Season: Northern Spring