The bottom half of this observation shows a portion of a frost patch on a mound inside a northern hemisphere crater. This is the same frosted mound shown in this image
. The frost patch has remained largely stable at least since the Viking era (late 1970s).
The bright frost region is bounded by a dune field on the northeast. Several sizes of dunes are visible. The size classes probably represent generations of dunes that formed under a variety of dominant wind conditions.
We can also see dunes
and the frost boundary up-close. The frost is largely absent over the dunes, and is more stable over the ground that does not have dune-shaped landforms.
: 6 December 2006 altitude
: 313 kmObservation details page
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