Secret military tunnels

An endless labyrinth of tunnels and rooms beneath Whitehall that hold untold secrets and technology from before the war. No one knows exactly what lies in the tunnels far beneath the city, the few that said they worked in Whitehall have different theories of just what's down there, some saying researching facilities, others say testing grounds for secret weapons while most agree that it is just used as storage for all manner of military hardware.

The exact location of the entrance has been long forgotten but many have led expeditions to the old government buildings to try and find it, either dying in the process or losing their minds. The Commonwealth and Nationalists have both hired many men to venture into Whitehall to find it, never hearing from them again, the 22nd Recon Element is the only group to regulary go and return unscatched. But still they remain no closer to finding the entrance.