If you’d like to glimpse the inside story of one aspect of the mission of Grand Coulee Dam, this is a good video.

The dam was originally conceived to provide irrigation to more than a million acres of potential farmland in the Columbia basin, but these days most people think of it as a huge electricity producer.

It is that, but this video, produced by the Bureau of Reclamation as a tool to help potential recruits, also provides a good overview of the basics with some spectacular footage. Watching it will help you appreciate what you see when you visit in person.

Grand Coulee Dam is the largest electrical production facility of any kind, in terms of capacity, in North America. But it doesn’t just happen magically. These folks make it happen. Watch: