AN ANCIENT RIVER DELTA lies at right foreground inside Eberswalde Crater. This view looks south, with Holden Crater (154 km wide) in the distance. Exploring the delta's sediments would be a planetary geologist's dream, but landing the Mars Science Laboratory rover safely there may prove highly difficult given the rough terrain. (A 1.4 MB version of the image is available.) Credit: NASA/JPL/Arizona State University, R. Luk (vertical exaggeration about 2x).
To explore Eberswalde further, check out Where Waters Ran, which also covers Holden Crater.