[4K UHD] Maeslantkering / Maeslant Storm Surge Barrier

4K footage of the Maeslant Barrier in the New Waterway, near Rotterdam. It was opened on May 10th 1997 by Queen Beatrix. The barrier consists of two large hollow steel doors. Under normal conditions the doors are open, concealed within docks on each side of the waterway. This allows unhindered access for shipping traffic into the port of Rotterdam. When the water level rises to 3 metres above Amsterdam ordnance zero, the docks are flooded and the doors begin to float. They are driven into the waterway and then flooded, thus sinking and sealing off the 360 meter wide waterway. The colossal barrier is almost as long as the Eiffel Tower and weighs four times as much.

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