... Credit: Alan Friedman Explanation: The dark-floored, 95 kilometer wide crater Plato (top) and sunlit peaks of the lunar Alps are highlighted in this sharp digital mosaic of the Moon's surface . ... The prominent straight feature cutting through the mountain range (lower right) is the lunar Alpine Valley , about 160 kilometers long and up to 10 kilometers wide. Of course, the large, bright alpine mountain near bottom center is named Mont Blanc and reaches over 3 kilometers above the lunar surface. ...