In Portugal, the Varosa dam was built on a small tributary of the Douro River. The concrete vault is best known for its impressive staircase built in terraces, allowing the natural rock and the structure of the dam to merge.
In Portugal, the Varosa dam was built on a small tributary of the Douro River. The concrete vault is best known for its impressive staircase built in terraces, allowing the natural rock and the structure of the dam to merge.
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