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File:Stwlan.dam.jpg |Description=The upper reservoir (Llyn Stwlan) and dam of the Ffestiniog Pumped Storage Scheme in north Wales. The four w ...dia:en:User:Arpingstone|Arpingstone]] 750×483×8 (112585 bytes) ''<nowiki>Stwlan Dam</nowiki>''(750 × 483 (110 KB)) - 12:05, 3 July 2010
