Gorgonum Chaos

This VIS image shows part of Gorgonum Chaos. Chaos terrain is typified by regions of blocky, often steep sided, mesas interspersed with deep valleys. With time and erosion the valleys widen and the mesas become smaller. Chaotic regions form when groundwater escapes to the surface, undermining it and causing the ground to collapse. The linear depressions at the bottom of the image are part of Sirenum Fossae. Gorgonum Chaos is located in Terra Sirenum.