Carnegie Rupes makes a dramatic sight in this large image mosaic. The giant lobate scarp cuts through Duccio crater. If you were to approach the scarp from the southwest, you would find yourself facing a wall nearly 2 km high! Be sure to zoom in for a closer look! Carnegie Rupes was named after a research vessel launched in 1909. The ship was built almost entirely from wood and other non-magnetic materials to allow sensitive magnetic measurements to be taken for the Carnegie Institution's Department of Terrestrial Magnetism. http://photojournal.jpl.nasa.gov/catalog/PIA19279