The world is a book #fish world #beauty scene #ocean mystery #fisheryq
These national monuments have hidden secrets that few know about. Today we're taking a look at some of the most amazing secrets hidden inside national monuments.
The magnificent Hoover Dam which was constructed 80 years ago, still stands strong and serves the US in the fields of irrigation, flood control, and power production. Even during a torrential rainfall you won’t see Hoover dam overflowing like this causing destruction. Welcome to the engineering secrets of Hoover Dam. In this video, you are going to assume the role of Hoover Dam design engineer Mr. John Savage and design and construct a gigantic dam in Arizona’s Colorado River.
