THEMIS: Active dune field in Noachis

Crater dunes in Noachis (THEMIS_IOTD_20181213)THEMIS Image of the Day, December 13, 2018. Today’s VIS image shows sand dunes on the floor of an unnamed crater in Noachis Terra.

These dunes are likely active because they are dark, indicating that they move often enough to shake off the light-toned dust.

Outside the dune field, the soft appearance of the terrain suggests it is mantled with some material, perhaps ice-rich dust.

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