With the outbreak of World War II the facilities of PK Porthcurno were under threat and in 1941 miners were employed to build tunnels into the valley hillside to house the telegraphy equipment
Miners digging the PK Porthcurno tunnels in 1941
Entrance to the tunnels dug out of solid granite in the hillside next to the main building
The main entrance and blast door into the tunnels, there is another blast door on the way out
Museum information plaque: Blast Proof Doors
Entering the wireless room in World War Two tunnels in Porthcurno
Museum information plaque: Twenty four hour clocks
These twenty four hour clocks are a prized possession of the museum and have a complex winding system behind them that still keeps them rotating today
Museum information plaque: Great Circle Map
The Great Circle map created by Leslie MacDonald Gill in 1945
Life inside the wireless room
Museum information plaque: Direct Printer 1940s
The adaptor on this direct printer reminded me of the old matrix printers you used to plug into 90's computer systems, difference was that this adaptor was huge in comparison!
A very helpful guide and long time resident of PK Porthcurno explained what all these fuses and how they are linked to the undersea cables, I must it was alittle confusing for to grasp but fascinating none the less!
This is one of the actual bombs dropped on Cornwall during World War Two, it fell nearby on Roskestal Farm in 1941
Museum information plaque: Attacks on West Cornwall
The red spots on this map show where World War Two bombs fell on Cornwall
Museum information plaque: Attack on Electra House
Photo taken after the bomb blast on Electra House, London in 1940
Cable & Wireless Limited World map
A submersible trencher being lifted onto the cable ship Monarch
The Wheatstone bridge used to measure an unknown electrical resistance (it's not a pair of futuristic record turntables...)
Display of cable sections
Museum information plaque: Training Poles
Mini training poles erected in the 1960s as part of the training facilities for the Cable & Wireless College. The height of the pole meant students did not need to use ladders
The Cable Hut c.1929 is where undersea telegraph cables came ashore from all corners of the world
The sandy beach at Porthcurno where the cables meet the sea
Eastern House c.1904 was the main building for the PK Porthcurno telegraph communications until 1970 and later became the training school until 1993, it is now the Museum of Global Communications