Victoria Crater with the bed of dunes in the mid. every dune is approximate 15-7 meters width.

Victoria Crater is a large impact crater in the region of Meridiani Planum. I'ts diameter is at it's widest 803 meters long and at it's narrowest ± 610 m.
The crater became famous after the visit of one of the Mars Exploration Rovers called: Opportunity. At it's deepest point ,78 meter deep, is a bed of dunes, which can be evidence of formal presents of water.