THEMIS Vistas

 WHEN SLABS OF ROCK BROKE OPEN in Iani Chaos, groundwater gushed out of the fractures and poured northward through Ares Vallis, on the horizon at center. The remaining mesas and buttes form what scientists call chaotic terrain, a highly apt term. This view looks north. (A 3.5 MB version of the image is available.) Credit: NASA/JPL/Arizona State University, R. Luk (vertical exaggeration about 3x).To explore this area further, check out the THEMIS feature article.