Wopmay (or "The Sleeping Bear") - Sol 251

Caption NASA originale:"NASA's MER Opportunity examined a boulder called Wopmay before heading further east inside Endurance Crater. The frames combined into this false-color view were taken by Opportunity's PanCam during the Rover's 251st Sol (Oct. 7, 2004).
The coloring accentuates iron-rich spherical concretions as bluish dots embedded in the rock and on the ground around it. The rock is about 1 mt (3 feet) across. The slope of the ground and loose surface material around the rock prevented Opportunity from getting firm enough footing to use its rock abrasion tool on Wopmay.
Evidence from the Rover's Spectrometers and MI is consistent with a possibility that rocks near the bottom of the Crater were affected by water both before and after the crater formed. The evidence is still not conclusive".