Geological features

Geological features

. The uplift that created the Tharsis Montes and nearby shield volcanoes (left) seems to have fractured the terrain and opened up an enormous network of chasmata, or canyons, knows as Valles Marineris (center). Catastrophic floods originating in the vicinity of these canyons flowed north (top) into Chryse Planitia, which contains the site of the Viking 1 lander and the Mars Pathfinder lander.

Copyright 2010, Professor Kenneth R. Lang, Tufts University