The channel feature in this image from NASA 2001 Mars Odyssey spacecraft is called Mangala Fossa. This feature was formed by tectonic activity, with the walls being faults that allowed the central portion to slide downward forming a graben.
The channel feature in this image from NASA 2001 Mars Odyssey spacecraft is called Mangala Fossa. This feature was formed by tectonic activity, with the walls being faults that allowed the central portion to slide downward forming a graben.