Halliggye Fogou

A tunnel within Halliggye Fogou.

Free Entry

Open any reasonable time daylight hours from May until September


Trelowarren Estate, Mawgan, Helston, Cornwall, TR12 6AF

Before You Go

Roofed and walled in stone, this complex of passages is the largest and best-preserved of several mysterious underground tunnels associated with Cornish Iron Age settlements. The purpose of such ‘fogous’ – a Cornish-language word meaning cave – is unknown, but they may have been places of refuge, storage chambers or ritual shrines. Halliggye Fogou, thought to date from the 5th or 4th century BC, was once part of a small farming settlement, which was probably occupied until the end of the Roman period.

Managed by the Trelowarren Estate.

Read more about Halliggye Fogou's history.

Before You Go

Access: There are steep steps that can be slippery down into the Fogou.

Prices and Opening Times: The site is open any reasonable time during daylight hours from May until September. The Fogou is blocked from October until April due to roosting Greater Horseshoe bats. Entry to the Fogou is free, but the rest of the estate is not managed by English Heritage and charges may apply. View details.

Parking: There is charged parking available in the Trelowarren Estate, free to English Heritage members. The Fogou is a short uphill walk away. View details.

Dogs: Dogs on leads are welcome. 

Other Information: If you would like to explore the full 30 metres of this mysterious passage we advise you to bring a torch.

Please be aware: The steep steps down into the fogou can be slippery

English Heritage does not permit drone flying from or over sites in our care, except by contractors or partners undertaking flights for a specific purpose, who satisfy stringent CAA criteria, have the correct insurances and permissions, and are operating under controlled conditions.

Plan a Great Day Out

Extend your visit to Halliggye Fogou with a trip to Pendennis Castle, one of Henry VIII's finest coastal fortresses. Explore the castle's 'Fortress Falmouth and the First World War' exhibition or visit the Discovery Centre. The Barrack Block tearoom also serves a selection of Cornish regulars, all sourced from local produce.

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About us

English Heritage cares for over 400 historic buildings, monuments and places - from world-famous prehistoric sites to grand medieval castles, from Roman forts on the edges of empire to a Cold War bunker. Through these, we bring the story of England to life for over 10 million people each year. The English Heritage Trust is a charity, no. 1140351, and a company, no. 0744722, registered in England.

How We Are Funded

Our target is to become completely self-funding by 2023. Our confidence in achieving this is based on our track record. During the past 10 years, our commercial income has doubled and we have raised nearly £60m in donated income.

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  • 20% One off capital grant
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