The dunes in this daytime IR image from NASA 2001 Mars Odyssey spacecraft appear bright because they are warmer than the surrounding crater materials. These dunes are located on the floor of Proctor Crater.
Proctor Crater Dunes
The dunes in this daytime IR image from NASA 2001 Mars Odyssey spacecraft appear bright because they are warmer than the surrounding crater materials. These dunes are located on the floor of Proctor Crater.