Guardian telephone exchange, Cold War telephone exchange beneath Manchester, England.
The Guardian telephone exchange consists of a network of tunnels stretching over two kilometers beneath Manchester's streets at a depth of 35 meters.
Constructed between 1954 and 1957, this underground facility formed part of a secure communications network connecting London with Washington during Cold War tensions.
The exchange reflects British engineering capabilities of the 1950s, incorporating advanced telecommunications systems with nuclear protection specifications beneath an urban environment.
Multiple access points exist throughout Manchester, with the main entrance located on George Street, featuring a 35-ton sliding cover for security purposes.
The facility includes two levels of tunnels equipped with diesel generators, ventilation systems, sleeping quarters, kitchen facilities, and recreational spaces including a bar.
Location: Manchester
GPS coordinates: 53.47778,-2.24139
Latest update: March 13, 2025 12:27
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