back yard cold war era underground nuclear bunker

Not sure of the history of this fall out shelter, but it is well built and solid. This would be the place to hide during a nuclear war. If I was going to build a do it yourself bunker, I would make it much like this one. This video is rather long but I wanted to show as many details as possible. The bunker is located in cottage country, far away from any city. The cottage was recently built, and many construction materials were left in here.