![Alwen-reservoir-industrial-hydroelectric-landmark-historical-rural-lake-dam-building-pull-back-low-over-shoreline](https://videocdn.cdnpk.net/videos/0ea90182-b871-4435-8bad-d86a01efda30/horizontal/thumbnails/small.jpg)
Alwen reservoir industrial hydroelectric landmark historical rural lake dam building pull back low over shoreline
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