'Endurance' From the Inside
Jet Propulsion Laboratory https://www.jpl.nasa.gov/ June 15, 2004
This image taken by the hazard-avoidance camera on sol 137 (June 12, 2004) shows the Mars Exploration Rover Opportunity's rear view from its new position about 5 meters (16 feet) inside "Endurance Crater." The rover is currently investigating a flat rock dubbed "Tennessee," which scientists believe may be made up of the same evaporite-rich materials as those found in "Eagle Crater."