Halliggye Fogou

Visitor Guide

Halliggye Fogou lies within the Trelowarren Estate, a working country estate on the Lizard Peninsula that combines historic gardens, holiday accommodation and a network of walking trails. Parking is available on the estate, charged for non-members, with English Heritage members admitted free. From the car park it is roughly a half-mile walk through parkland and woodland to reach the fogou itself, a pleasant walk in its own right through part of the wider Trelowarren estate.

Once at the site, steep steps lead down into the entrance, which can be slippery in wet weather, so sturdy, grippy footwear is essential. Inside, the main passage runs for around 30 metres, curving gently and narrowing at a point known as the "creep" — a lower, tighter section that visitors must stoop to pass through. A torch is strongly recommended, as very little natural light reaches the interior beyond the entrance.

Because the fogou provides a winter roost for bats, English Heritage closes the interior from 1 October to 30 April each year, so a visit is only possible between May and September. Allow around thirty minutes to explore the passages and the surrounding round, longer if combining the visit with a wider walk around the Trelowarren Estate's gardens and grounds.

The nearest town with a full range of facilities is Helston, a few miles to the north-west, with shops, cafes and pubs. The Helford Estuary and St Michael's Mount are both within easy reach for visitors looking to combine the fogou with other Cornish highlights on the same day.

History

Halliggye Fogou was built around the 5th or 4th century BC, during the Iron Age, using massive stone slabs set without mortar to form a long, roofed underground passage. It stands as the largest and best-preserved of Cornwall's fogous, a class of monument found nowhere else in the world, and its scale and state of preservation make it one of the most important prehistoric sites on the Lizard Peninsula.

The fogou formed part of a small farming settlement known as a "round", an enclosure defined by earthwork banks and ditches that is thought to have housed several family groups living in four or five houses. Rounds of this kind were once common across Cornwall, with more than 2,000 recorded examples, but fogous are found associated with only a small number of them, all in the far west of the county.

Excavation at Halliggye revealed that the fogou was not built in a single phase. The section beyond the narrow "creep" partway along the main passage appears to be a later addition, and entrances were remodelled and extended at various points between around 75 BC and AD 50, showing that the structure continued to be adapted and used across many generations. Pottery recovered from the site indicates that occupation of the settlement, and use of the fogou, continued into the Roman period, a span of activity lasting several centuries.

Despite more than a century of archaeological attention, the true purpose of fogous remains one of Cornish archaeology's genuine unsolved questions. Suggestions include storage for grain or valuables, places of refuge during raids or conflict, and spaces used for ceremony or ritual associated with the surrounding farming community; it is possible the fogou served different purposes at different points in its long history. Today Halliggye is owned by English Heritage and sits within the privately managed Trelowarren Estate, which controls access and maintains the surrounding parkland, while the fogou's interior remains seasonally closed each winter to protect a colony of roosting bats.

Important Features

• The main passage: a stone-lined tunnel roughly 30 metres long, built from massive slabs without mortar.
• The "creep": a narrower, lower section partway along the passage that visitors must stoop to pass through.
• The surrounding round: earthwork banks marking the Iron Age farming settlement the fogou belonged to.
• Multiple building phases: evidence of remodelled entrances dating to between 75 BC and AD 50.
• Roman-period pottery: finds showing the settlement and fogou remained in use for several centuries.
• Seasonal bat roost: the interior closes each winter to protect a resident bat colony.

Visitor Information

Things to Do Nearby

Frequently Asked Questions

Official English Heritage Site

For the latest access information, seasonal opening dates and any temporary restrictions, check the official English Heritage page for Halliggye Fogou before you travel.

Visit the official English Heritage website