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| Name | Mysterious Subterranean Secret U.S. Military Base |
| Video Uploader | Video From DOCUMENTARY TUBE |
| Upload Date | This Video Uploaded At 15-12-2015 11:00:02 |
| Video Discription | The design, purpose and construction of this research base Camp Century which was built below ice sheet of Greenland in 1959 about the size of a small city. |
| Category | Education |
| Tags | structures | engineering | projects | underground | management | expedition | logistics | geographic | equipment | build | civil | arctic | tunnels | dig | how | learning |
