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Austria's Mega Dam · Richard explores one of the world's biggest man-made engineering projects: the Kölnbrein Dam, which can hold back an incredible 200 million tonnes of water.
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Richard explores one of the world's biggest man-made engineering projects: the Kölnbrein Dam, which can hold back an incredible 200 million tonnes of water.
About the programme: Richard Hammond embarks on a global adventure to explore the world’s biggest structures and machines and discover how engineers build, maintain and use them.
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