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About: Military citadels under London     Goto   Sponge   NotDistinct   Permalink

An Entity of Type : yago:WikicatFortificationsOfLondon, within Data Space : dbpedia.org associated with source document(s)

Type: yago:WikicatMilitaryInstallationsOfTheUnitedKingdomyago:Artifact100021939yago:DefensiveStructure103171356yago:Facility103315023yago:Fortification103385557yago:MilitaryInstallation103763133yago:Object100002684yago:PhysicalEntity100001930yago:YagoGeoEntityyago:YagoPermanentlyLocatedEntityyago:Structure104341686yago:Whole100003553yago:WikicatFortificationsOfLondon New Facet based on Instances of this Class

A number of military citadels are known to have been constructed underground in central London, dating mostly from the Second World War and the Cold War. Unlike traditional above-ground citadels, these sites are primarily secure centres for defence coordination. A large network of tunnels exists below London for a variety of communications, civil defence and military purposes; however, it is unclear how these tunnels, and the various facilities linked to them, fit together, if at all. Even the number and nature of these facilities is unclear; only a few have been officially admitted to.