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Is There An Underground City In Colorado? [Solved]
Well, you can’t see it from the outside, that is. It’s an underground base, and it’s been around since the Cold War. It’s a fortress of sorts, with 25-ton blast doors and 15-foot thick walls made of granite. Inside are all kinds of high-tech gadgets and gizmos that help protect us from any kind of attack. Wow! Talk about top secret!
