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'Endurance' Looms on the Horizon
April 30, 2004 
This image mosaic from the Mars Exploration Rover Opportunity's panoramic camera was taken from a rover position approximately 70 meters (about 230 feet) from the rim of "Endurance Crater" on the rover's 93rd sol on Mars. The foreground highlights the now familiar ripples and dimples, common on the plains of Meridiani Planum. Some rock outcrop is seen emerging on the hill to the left, indicating that the rover is driving through the eroded remnants of the crater's ejecta blanket and is getting close to its rim. This light-colored outcrop is probably similar to the rocks seen at "Fram Crater" and "Anatolia," and studied in detail at "Eagle Crater." The Eagle Crater rocks are believed to have been deposited in an open body of water. The science team is intrigued by the darker rock on the far side of the crater wall. Just right of the center, on the far crater wall, rocks appear to form thick, massive layers, suggesting they may have been formed by a different geologic processes than the lighter rocks in the foreground. The greater thickness of layered rocks at Endurance Crater will provide the team with a longer record of geologic processes operating at Meridiani Planum. Image Credit: NASA/JPL/Cornell
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