Overview: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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First Air Date: Jan 15, 2020Last Air date: Mar 11, 2020Season: 1 SeasonEpisode: 9 EpisodeRuntime: 43:14 minutesQuality: HDIMDb: 3.6 / 10 by 12 usersPopularity: 1.7612Language: en
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