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What is the Thames Barrier?
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The Thames Barrier is a flood defence system across the River Thames to the east of central London. Building started in 1974 and took eight years to complete. When there is a flood alert from the North Sea, steel gates are raised to hold the waters back. The gates form a wall 520 metres wide. | | The shell-like structures of the Thames Barrier cover the machinery that raises and lowers the gates. |
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Previous:
Back
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Book:
1001
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Section:
Human World
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Chapter:
Europe
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