Nant-y-Gro Dam, blown up during war for testing of dambusters bouncing bomb.

Part of the Nant-y-Gro Dam. Destroyed by explosives by Barnes Wallis. Led to RAF 617 Squadron using bouncing bombs in the Dam busters raids. Elan Valley, Powys, Wales, United Kingdom, Europe.

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FatManPhoto ID: 2015_5_44