Arkhangelsky Crater

Arkhangelsky crater is just to the northeast of the giant Argyre impact basin in the southern hemisphere of Mars. This THEMIS visible image shows the floor of this crater with a few dark barchan sand dunes. Dunes form when wind blows sand across a surface. The barchan dunes shown here form when there isn't a lot of sand to start with. If there were, other dune forms would be visible.