|Global Tunnel System|
The Montauk using Nod's Tunnel System
Subterranean transport network
Note that most Nod records have been destroyed, which means that the exact information present here may be the result of conjecture; due to GDI's inability to gain intelligence about this network, it may be some time before more complete and accurate information regarding the Global Tunnel System can be acquired.
Current information indicates that a massive amount of tunnels exist throughout the globe, sufficient to allow a vehicle as large as the Montauk to travel between combat zones while yet remaining underground. The two facts that Nod does use this system for even command personnel, (which indicates that they consider the system secure), and the fact that these tunnels extended enough for the Montauk to use them indicate that Nod has a monopoly or near monopoly on advanced tunnel boring equipment. Before the Third Tiberium War, various Reinforcements Bays connected to the system were built all over the world, which can be captured and used to bring in reinforcements through the tunnels.