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Modern Marvels

0/ 10
60 min

Season 1, episode 1

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Grand Coulee Dam
The world’s largest concrete dam–and the largest concrete structure in the world–lies on the Columbia River in the State of Washington. B uilt in 1931, it is also one of the largest hydroelectric power plants in the world.
Release date: 10 December 1993
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Modern Marvels