Qualla: PK Porthcurno

PK Porthcurno: Introduction

Sat, 23 May 2026 00:00:00 GMT

Photo credit Nilfanion, CC BY-SA 4.0. In Morse code, the letters PK go di-dah-dah-dit, dah-di-dah. For most of the twentieth century that was how the world heard Cornwall. Telegraph operators across five continents would tap PK to test the line, to call up the cable station at the western tip of England, to ask if anyone was awake at the relay point through which roughly half of the British Empire's electronic traffic passed. The acronym stuck so completely that when the village's telegraph museum rebranded in 2020, it took PK as its own name. The museum sits in the tunnels that were carved into the valley wall by Cornish tin miners in 1940 to keep the cables, and the empire, alive through the war.

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Image: Nilfanion | CC BY-SA 4.0

PK Porthcurno: Where the Empire Came Ashore

Sat, 23 May 2026 00:00:00 GMT

Photo credit DuncanScottMackenzie, CC BY-SA 4.0. On 23 June 1870, a cable laid by the steamship Hibernia between Carcavelos near Lisbon and the beach at Porthcurno completed the last link in a wire that ran from London to Bombay. That evening, telegraph operators in India sent a test message westward. It arrived in real time at...

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Image: DuncanScottMackenzie | CC BY-SA 4.0

PK Porthcurno: The Tunnels of 1940

Sat, 23 May 2026 00:00:00 GMT

Photo credit Lewis Clarke, CC BY-SA 2.0. Porthcurno was an obvious target. A single German bomb on the cable hut could blind half the Empire at a stroke. So in June 1940, with invasion forces gathering on the French coast, Cornish tin miners began driving two parallel tunnels into the granite of the valley's eastern wal...

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Image: Lewis Clarke | CC BY-SA 2.0

PK Porthcurno: The Collection

Sat, 23 May 2026 00:00:00 GMT

Photo credit DuncanScottMackenzie, CC BY-SA 4.0. The museum's collection has been awarded designated status by the Arts Council, which means the government has formally recognised it as nationally important. The holdings include the archives of Cable and Wireless plc, the company that grew out of the 1934 merger of the original...

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Image: DuncanScottMackenzie | CC BY-SA 4.0

PK Porthcurno: Going Forward

Sat, 23 May 2026 00:00:00 GMT

Photo credit DuncanScottMackenzie, CC BY-SA 4.0. The cable office at Porthcurno closed in 1970. The training college that succeeded it stayed open until 1993, then shut its doors as the industry consolidated and the work moved elsewhere. Former employees, refusing to let the story die with the company, started a small museum at...

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Image: DuncanScottMackenzie | CC BY-SA 4.0