The Dunes of Ogygis (Original NASA/MGS/MSSS b/w Frame)

Caption NASA originale:"This MGS-MOC image shows dark Sand Dunes, with a thin coating of Autumn Frost, in the Ogygis Regio, West of the Argyre Basin. The steepest Slopes on the Dunes (such as their "Slip Faces"), point toward the North-North/East (lower left), indicating that the Dominant Winds in the Region blow from the South-South/West (upper right)".

Location near: 50,4° South Lat. and 66,6° West Long.
Image width: ~3 Km (~1,9 mi)
Illumination from: upper left
Season: Southern Autumn