this blog is about wonders of the world, and most amazing things, interesting records, Wonders of Natures, and all about the things that you amazed.
Friday, 5 October 2012
Hoover Dam
Hoover Dam (221.46 m), once known as Boulder Dam, is a concrete arch-gravity dam in the Black Canyon of the Colorado River, on the border between the US states of Arizona and Nevada.
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