Quadrangle map of Oxia Palus labeled with major features. This quadrangle contains many collapsed areas of Chaos and many outflow channels (old river valleys).
Hydaspis Chaos is a region in the Oxia Palus quadrangle of Mars, located at
3.2° north latitude and 27.1° west longitude. The region is about 355 km across. It was named after a classical albedo feature.