Thick sediments in an ancient crater hint at a long, complex geological history.
Caption:
GONE IN THE WIND. Erosion is slowly removing a thick pile of sediments that may have once filled a crater in eastern Meridiani. Note the layering in the foreground of this view looking northwest.. (A 5 MB version of the image is available.) Credit: NASA/JPL/Arizona State University, R. Luk (vertical exaggeration about 2x).