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Sand as far as the eye can see
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A huge 193 sq. miles (500 km2) depression area, the bay of Mont-Saint-Michel reveals at each low tide stretches of undulating sand. In certain areas, quicksand can form, particularly near the riverbeds and all around the Mont. They are composed of about 40% fine sand, 50% salt water, and 10% clay. The grains of sand form a structure that is held together by the viscosity of the clay, moistened by the water. They appear solid, but pressure causes them to sink gradually. It is therefore advised to follow a guide, rather than one’s instincts, as quicksand constantly change places.
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