Dams have been around for a long time, used by animals even before we knew about them! In this segment, we take a look at the mightiest of all man-made dams - The Hoover Dam on the border of Arizona and Nevada. Having taken 5,000 men over 5 years to build this incredible structure, let's take a look at how and why it was created!

Originally released by LeVar Burton Kids, 2015. Streaming video file encoded with permission for digital streaming by Infobase on May 16, 2018.

Hoover Dam (5:35); .