Public domain
A Tale of Collapse Terrain
From the collection of NASA Image and Video Library. Free to download, adapt and use — no permission needed.
About this work
North of Ganges Chasma lies Orson Welles Crater, whose floor contains broken up blocks we call chaotic terrain and which is the source for the major outflow channel Shalbatana Vallis. Between Orson Welles and Ganges Chasma is a region where materials subsided and collapsed over underground cavities that had once held aquifers. This image shows an elongated collapse pit. There is evidence that the pit was once filled with water as the groundwater erupted to the surface.
NASA Image and Video Library’s own descriptionCredit lineA Tale of Collapse Terrain. NASA/JPL, 2021-12-20. Public domain. ID: PIA25082.
