Subterranea UK sites in WW2 and others in Cold War I think that its the subforum adequated to this link, in other case, please dear moderators move it at his place . Its a fascinating and great site about the subterranean instalations in the UK territories, as Radar Chain Home, in the first years of the XXth Century or in the Cold War, with profuse and ilustrated technical documentation. Subterranea Britannica: Home Page