This image wastaken by Mars Colour Camera over Ophir Chasma, a canyon in the Coprates quadrangle of Mars at 4 south latitude and 72.5 west longitude.
The word chasma has been designated by the International Astronomical Union to refer to an elongate, steepsided depression. Ophir Chasma is part of the largest canyon system in the solar system known as valles marineris. The walls of the chasma contain many layers and the floors contain large deposits of layered materials. This image is taken on 19th July 2015 at an altitude of 1857 km with a resolution of 96 m. Larger images

https://media2.spaceref.com/news/2015/OphirChasma2.jpg

3D portrayals of Ophir Chasma terrain.