The Secret Tunnel Network is a secret network of tunnels connecting several locations, including the Omnifunctional Production Facility. As it is secret, only OPF-side terminals are pictured in this manual.
The OPF entrance:
The entrance in the omnifunctional OPF facility.
The Long Distance Access tunnel, constructed by GTech™ Tunnel Boring Machine technology.
The Long Distance Access tunnel, constructed by GTech™ Tunnel Boring Machine technology.