The Secrets Of Mars 2

These images from the Mars Exploration Rover (MER) Spirit were shown at Cornell on September 30, 2004, about one week before their official unveiling. During his lecture titled "Roving on Mars", Jim Bell called them the "defining images of the mission."
http://www.friends-partners.org/pipermail/fpspace/2004-October/013987.html

On August 5th, 2004, as the Mars Exploration Rover Spirit was making the slow climb out of Gusev crater on its way toward the so-called “Pot of Gold,” JPL commanded the rover to turn south and take a set of images of a nearby rocky outcrop and the plains (and rim) of Gusev beyond. The outcrop, nicknamed “Longhorn” by the MER-JPL ടീം.

http://photojournal.jpl.nasa.gov/jpeg/PIA06917.jpg