Melas Chasma

Melas Chasma is part of the largest canyon system on Mars, Valles Marineris. At only 563 km long (349 miles) Melas Chasma is not the longest canyon, but it is the widest. Located in the center of Valles Marineris, it has depths up to 9,000 meters (30,000 feet) from the surrounding plains. The floor of the canyon is very complex, containing features formed by action of the wind, water, and gravity driven landslides.