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Monument Valley October 17, 2008 |
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| Later, forces within the Earth's crust pushed the sea floor skyward, to 5500' (1500 m) above sea level, rivers crossing the uplifted area, meandering and changing their courses, eroding away the soft shales, some of whose remains now make up the conical slopes at the bases of the buttes, and the powdery Cutler Red silt that forms the desert floor. These Buttes and Mesas are all that's left. |
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