Halliggye Fogou, a 2,000-year-old tunnel system in Cornwall, continues to puzzle historians and archaeologists who are uncertain of its original purpose. The underground structure, known as a fogou—an old Cornish word for cave—is the most famous of its kind in the county.
The Mystery of the Fogou
Located in Helston, the tunnel system is open to visitors and branches into three chambers. Many of these fogous appear to have been emptied of their contents long before they were rediscovered, and even after excavations, their secrets remain hidden.
Speaking to the BBC, Susan Greaney, head properties historian at English Heritage, said: "Many of them were excavated by antiquarians, so we don’t have many good records for what was found. There are only a couple that have been excavated in modern times – and they don’t seem to be structures that really easily give up their secrets."
Theories and Speculation
Despite the lack of clarity, numerous theories exist about the caves' uses. In 1803, a Reverend Richard Polwhele entered the fogou and wrote that they "contained urns." However, any urns that were in the cave have long since been stolen away.
Others have suggested the caves could have been used for storage or as hiding places. However, the type of soil and the design of these caves make both possibilities seem rather unlikely.
Ceremonial or Seasonal Use?
Another theory comes from archaeologist James Gossip, who suggests they may have had seasonal uses. He told the BBC: "These were lost religions. We don’t know what people were worshipping. There’s no reason they couldn’t have had a ceremonial, spiritual purpose as well as, say, storage."
While the use of these fogous remains a mystery, visitors can explore Halliggye Fogou for free during daylight hours throughout most of the year.
