This image captured by NASA 2001 Mars Odyssey spacecraft shows part of the large dune field called Olympia Undae. There are hills in this region, and the dunes are concentrated in the lower elevations.
This image captured by NASA 2001 Mars Odyssey spacecraft shows part of the large dune field called Olympia Undae. There are hills in this region, and the dunes are concentrated in the lower elevations.