At Work in the Plains of Meridiani
Jet Propulsion Laboratory https://www.jpl.nasa.gov/ March 29, 2004
This image taken by the hazard-avoidance camera on the Mars Exploration Rover Opportunity shows the rover investigating a bright patch of soil dubbed "Mont Blanc." The rover used its microscopic imager, located on the instrument deployment device, or arm, to take pictures of Mont Blanc on sol 59, two sols after it exited 'Eagle Crater.' Later, Opportunity observed the spot with its Moessbauer and alpha particle X-ray spectrometers, also located on the arm. Though Mont Blanc appears unusually bright amidst the dark plains of Meridiani Planum, scientists believe it is the same red dust that blankets most of the surface of Mars. The soil patch appears to have collected downwind of Eagle Crater. The rover is facing northwest.