Giant's Ring

Overview

The Giant’s Ring sits in the townland of Ballynahatty, just four miles north-west of Belfast city centre. It is one of Ireland’s largest true henge monuments, a circular earthwork measuring 590 ft (180 m) in diameter that encloses 6.9 acres of open grassland. Five irregular gaps break the 11-ft-high bank, and at the centre of the circle stands a small cairn or cromlech: five upright stones supporting a massive capstone, the surviving remains of a Neolithic passage tomb. The site is free to visit, protected as a State Care Historical Monument, and sits within a public parkland that welcomes walkers, families, and dog owners alike.

History & Legend

Constructed around 2700 BC during the Late Neolithic, the Giant’s Ring predates the Great Pyramids of Giza. Early scientific surveys in the 1950s suggested the inner wall may have originally been faced with stone, pointing toward a ceremonial rather than defensive purpose. Archaeologists generally agree on three likely functions:

• A ceremonial meeting place – Located near an ancient fording point of the River Lagan, the site would have served as a natural gathering spot for early communities.
• A burial enclosure – The central cairn likely held the remains of a high-status individual, with the surrounding bank hosting rites to honour the dead.
• An astronomical or ritual site – 19th-century accounts and local folklore describe the ring as a pagan altar, possibly aligned with solar movements.

Over the centuries, the monument has absorbed layers of local myth. The most enduring legend credits the giant Fionn mac Cumhaill with its creation, claiming he hurled a massive stone that settled to form the central dolmen. The site’s use shifted dramatically in the 17th century when it was converted into a racecourse. Throughout the 18th and 19th centuries, local farmers uncovered human remains and pottery fragments during ploughing, many of which were donated to the Royal Irish Academy and the Natural History and Philosophical Society.

Preservation efforts began in earnest in the 19th century. Viscount Arthur Hill-Trevor installed the protective iron gate and surrounding wall in 1841, while Lord Dungannon later added the stone-lined perimeter wall that still frames the monument. A plaque commemorating Countess Dungannon’s 1897 visit remains visible near the entrance.

Archaeology & Research

Modern investigations have revealed that the Giant’s Ring was likely the focal point of a much larger ceremonial landscape. Aerial photography in the 1990s identified a cluster of crop-mark monuments in the surrounding fields, and site plans by archaeologist Barrie Hartwell mapped at least three additional features within a one-kilometre radius, including possible pit circles and cist burials.

The crop-mark surveys also revealed the Ballynahatty timber complex. A series of excavations in the 1990s exposed more than 400 deep postholes – around 471 in total – belonging to two timber enclosures covering roughly 100 metres by 70 metres. The inner structure featured a double ring of posts surrounding a central square platform, while the outer enclosure had an elaborate entrance façade. Constructing this required felling and erecting an estimated 550 tonnes of oak, birch and hazel. Around 2500 BC, the entire structure was deliberately burned; the charred stumps were then carefully removed and the postholes backfilled with soil and charcoal-rich rubble. This ritual destruction likely cleared the site for the more permanent stone henge that stands today.

Excavations in 1991 uncovered a stone-lined inner bank and confirmed that the central cairn was originally covered by a burial mound. Earlier records from 1855 by Robert MacAdam describe a subterranean stone chamber on the north side of the ring – roughly seven feet across, with a flagged floor and six internal compartments. Among the cremated and unburnt remains was the skeleton of a woman, radiocarbon-dated to between 3343 and 3020 BC. A 2015 genome sequencing study found she had Near Eastern farmer ancestry, with black hair and brown eyes, and she represents the wave of agriculturalists who migrated across Europe bringing farming techniques and burial customs to Ireland. Pottery fragments and burnt bone urns recovered from the chamber date human activity at the site between 3039 and 2503 BC. Hartwell’s comparative studies note the monument’s exceptional scale: its 180 m internal diameter makes it roughly twenty times larger than the Drombeg stone circle in County Kerry. The combination of a massive enclosing bank and a central passage tomb creates a rare henge-and-tomb complex in Ireland.

What to See & Do

• Walk the earthwork – Follow the low bank and surrounding ditch. The height of the enclosure blocks out the modern landscape, creating a focused, inward-looking space where the sky dominates the view.
• Examine the central cairn – The five upright stones and capstone form a striking silhouette. Interpretive panels at the entrance detail the tomb’s construction and Neolithic burial customs.
• Study the gaps – Five openings break the continuous bank; three are believed to be original. Their positioning likely facilitated processional movement or marked specific celestial alignments.
• Visit the Guardian tree – A large, ancient oak stands just beside the dolmen. Locals refer to it as “the Guardian,” and its sprawling branches provide a natural frame for photographs.
• Take in the meadow – The enclosed grassland is a popular spot for picnics and dog walking. On clear days, the open space offers a quiet contrast to the nearby urban environment.
• Check for seasonal events – The grounds occasionally host community gatherings, historic bazaars, and outdoor music sessions.

Walking the Giant’s Ring Trail

The monument sits at the heart of the Giant’s Ring Trail, a moderate 2–3 km circular route that connects the henge to the wider Lagan Valley Regional Park. Starting from the on-site car park, the path follows the River Lagan upstream, crosses Edenderry Road, and winds through young broad-leaved woodland before reaching the earthwork. After exploring the ring, the trail continues to the Sandpit Field, a glacial amphitheatre, before climbing to Terrace Hill Garden. The garden features restored 1930s plantings and overlooks the Lagan valley and the Belfast Hills.

The route is suitable for most fitness levels but includes uneven ground, short inclines, and a few stiles. Dogs are welcome on leads, and walkers should remember to close any farm gates they pass. The trail is clearly marked on local maps and listed on the WalkNI website.

Practical Information & Accessibility

• Opening hours: The site is open daily with no formal opening hours. The iron gate remains unlocked year-round.
• Admission: Free
• Parking: A small free car park is located on-site. Spaces fill quickly on sunny weekends, so early arrival is recommended.
• Getting there: Drive via Ballynahatty Road off the A55. By public transport, take a Translink bus to the Shaw’s Bridge stop and walk approximately 15 minutes to the car park. Translink bus routes 5A and 5B also stop near Ballynahatty Road.
• Facilities: There are no toilets or refreshments on-site. Public toilets and café options are available a short walk away at Barnett’s Demesne.
• Accessibility: The entrance gate is level, but the interior consists of natural grass and earth. The surface can become soft and muddy after rain, and there are no paved pathways. Wheelchair users may find the terrain difficult to navigate, though the central area is relatively open.
• Visitor note: The iron gate is designed to admit visitors one at a time, which helps maintain the site’s quiet atmosphere. Bring waterproof footwear if visiting after wet weather, and check the Discover Northern Ireland website for any temporary closures or event schedules.

Nearby Attractions

• Belfast Castle – A short drive away, the castle grounds offer historic architecture, manicured gardens, and panoramic views over the valley.
• Belfast Hills – The surrounding upland area provides an extensive network of walking routes and scenic viewpoints, easily combined with a visit to the ring.
• Barnett’s Demesne – Located just a few minutes’ walk from the Giant’s Ring, this riverside park features heritage gardens, a café, and easy walking paths along the Lagan.

The Giant’s Ring remains one of the most accessible Neolithic sites in Ireland. Arriving early on a weekday allows you to experience the enclosure without crowds, and the interpretive panels provide clear context for the stones and earthworks. Plan your visit around the seasonal light in the Lagan valley, and you will have a clear view of how early communities shaped this landscape over five thousand years ago.