威尔士伊兰谷(Elan Valley, Wales)

这座铜制圆顶阀门塔位于Pen y Garreg大坝的顶部，该大坝是威尔士中部风景如画的Elan山谷中的六座大坝之一。在塔楼的另一边，水从37米的落差上落下，这是一个精心设计的水坝、水库和117公里长的输水管道系统的一部分，该输水管道建于19世纪末，用于将饮用水输送到英国第二大城市伯明翰。这项巨大的土木工程壮举始于1883年，包括Pen y Garreg在内的前四座大坝于1904年完工。伊兰山谷位于寒武纪山脉中，因此水流从高山峡谷向下流向伯明翰，无需抽水。
原文：
This copper-domed valve tower sits on top of the Pen y Garreg dam, one of six dams in the picturesque Elan Valley in Mid Wales. On the other side of the tower, water falls over a 37-metre drop, part of an elaborate system of dams, reservoirs and a 117-kilometre aqueduct built in the late 19th century to channel drinking water to Birmingham, England’s second-largest city. Work on this huge feat of civil engineering began in 1883 and the first four dams, including Pen y Garreg, were completed by 1904. Elan Valley sits in the Cambrian Mountains so water flows downhill from the high valleys to Birmingham without needing to be pumped.
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