Most unique metal building found on the old base that moves on rails. Instead of its contents coming out, the building actually moves away to expose its contents. You tell us what it is, we can't figure it out. Leave comments or email us! New base revealed. What if there was another base that shared the number 51, designated by the US government? The producers have been given unprecedented access to such a base. This series will take you through all the mysteries of the base. The deep-space radar, the "operating room", unidentified artifacts, original base blueprints, satellite photos, and lots more in the series to come! This is a walk through a real decommissioned military base. Subscribe to Repobrain here at YouTube to keep up on all of our video releases. We expect to have at least 20 videos throughout the series, exploring every inch of the base.