THEMIS: Halley Crater dunes

Halley Crater dunes (THEMIS_IOTD_20181206)THEMIS Image of the Day, December 6, 2018. Halley Crater is located on the western side of Argyre Planitia. Sand dunes cover part of the crater floor.

The dunes’ dark tone indicates they are free from dust. This in turn indicates that the sands are loose and actively moving under the wind.

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