The eastern end of Valles Marineris opens into huge low lying channels filled with the mound and valley terrain called chaos. This image from NASA 2001 Mars Odyssey shows part of Eos Chaos.
The eastern end of Valles Marineris opens into huge low lying channels filled with the mound and valley terrain called chaos. This image from NASA 2001 Mars Odyssey shows part of Eos Chaos.