Hardened entry portal (Cold War Missile Silo and Command Bunker)
The graded entry to the buried works: a sloping approach with retaining walls and handrails, eight steps down to a platform, a headwall carrying a hardened door in a stepped frame, a blast hood over the opening and a wall alarm box.
- 格式
- GLB
- 文件大小
- 39 KB
- 三角面
- 728
- 许可
- CC0 1.0