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These ancient cliffs were formed during the Mezoneothonic Age, about 350 billion years ago. The wind and ocean currents deposited sand. As it piled up, the weight caused a buckling in the not-yet-hardened rock, and made the wrinkles you see here. Eons later, the earth went through a cataclysmic shift, tipping almost 90 degrees on its axis, and standing the wrinkled dunes on edge. Wind and water erosion exposed them, as you see them today.