Lonehort Battery – Bere Island’s Grand WWI Coastal Fort

Overview

Perched on the eastern tip of Bere Island, Lonehort Battery dominates the entrance to Berehaven Harbour, the deep‑water anchorage that once sheltered the Royal Navy’s dreadnought fleet. Constructed between 1898 and 1902 by the British Admiralty, it is the largest of the seven gun batteries that dot the island’s landscape. Today the northern sector – home to two 6‑inch QF guns and a single 9.2‑inch Mark X gun – has been painstakingly restored by the Bere Island Projects Group and is open to the public for guided tours.

History

The strategic importance of Bere Island dates back to the early 17th century, when Sir George Carew landed troops during the Siege of Dunboy. By the late 18th century the island was already a focal point of British defence, prompting the construction of four Martello towers after a failed French invasion in 1796. A major wave of fortification began in March 1898, when the Royal Engineers oversaw the excavation of a mile‑long, 15‑ft dry moat and a network of underground tunnels that would house ammunition, engine rooms and a parade ground.

By 1899 the moat was complete, and by 1903 the two 6‑inch guns were in place; a larger 9.2‑inch gun followed in 1910. These guns could fire a 28.4‑ton projectile up to 26 km, covering the stretch from the Sheep’s Head peninsula to east of Shot Head, Adrigole. During the First World War the battery formed part of a defensive ring protecting the fleet anchored in Berehaven, while the US Navy also used the harbour as a convoy‑shielding base.

After the Anglo‑Irish Treaty of 1922 the island remained a British Treaty Port until 1938, when the guns were finally handed over to the Irish state. The battery fell into disuse, its concrete walls weathering in silence for decades. In 2003 the Bere Island Projects Group secured a licence from the Department of Defence and, with funding from the Heritage Council and Cork County Council, launched a conservation plan that prioritised Lonehort’s restoration as a visitor attraction.

What to See & Do

A typical tour begins at the iron bridge that spans the 10‑metre‑deep dry moat – the only battery on Bere Island to retain such a feature. Inside, licensed guides Barry Hanley and Teresa Hall lead visitors through the underground stores, pointing out original ammunition racks, the three engine rooms that once powered the island’s defences, and the caponiers that were planned but never built.

The highlight is, of course, the artillery itself. The 9.2‑inch Mark X gun, weighing 28.4 tons, still sits on its original mounting, its barrel pointing toward the open sea. Adjacent to it are the two 6‑inch QF guns, each a relic of the British Empire’s coastal‑defence doctrine. Guides explain the loading procedures, the firing arc of roughly 200°, and the strategic logic that made Berehaven a “second Gibraltar” in the eyes of contemporary newspapers.

Beyond the guns, the site offers dramatic vistas of Bantry Bay, the Beara Peninsula and the Sheep’s Head headland. The surrounding landscape – a mix of grassy knolls and rugged coastline – is part of the Wild Atlantic Way, making Lonehort an ideal stop for walkers. The Lonehort Loops trail (1.6 km, easy grade) starts at the battery gate and loops around the eastern tip, offering photographic opportunities of the moat, the gun emplacements and the sweeping sea beyond.

Events & Seasonal Highlights

• Heritage Week (late August) – Special children’s tours with hands‑on activities and storytelling about the battery’s role in WWI.
• Summer Art Exhibitions – Local artists occasionally display works in the restored northern sector during July and August.
• Commemorative Firing Demonstrations – On select dates (usually the last Saturday of July) a replica firing sound is played to illustrate the gun’s power; no live ammunition is used.

All events are seasonal and run only during the June‑September tourist window. Check the latest schedule on the official site or contact the Bere Island Projects Group.

Practical Information

The battery is owned by the Irish Department of Defence, but the Bere Island Projects Group manages day‑to‑day visitor operations. Group tours outside the regular schedule can be arranged by contacting the same phone numbers. The site is listed in the Record of Protected Structures (ID 01230), ensuring that any future work respects its historic fabric.

Please note: Opening times are subject to change and the occasional 13:00 slot may not run every season. Visitors are advised to confirm the current schedule before travelling.

Getting There

Bere Island is accessed via a short ferry crossing from Castletownbere (service operated by Beara Tourism, tel 027 700 54). Once on the island, follow the Rerrin road signs to the battery – the turn‑off is clearly marked. For those driving, free parking is available near the battery gates. The GPS coordinates are 51.6450995, ‑9.7865069, which can be entered into any navigation app.

Nearby Attractions

• Ardaragh Wedge Tomb – A Bronze‑Age burial monument a short walk inland from the battery; accessible via a marked trail. (Ardaragh Wedge Tomb)
• Rerrin Visitor Centre – Provides information on the island’s history, a small café and restrooms. Open year‑round.
• Bere Island Walking Trail – Extends beyond Lonehort, linking the battery to the island’s western forts and scenic beaches.

Why Visit?

Lonehort Battery is more than a collection of historic guns; it is a tangible link between local Irish history and the wider narrative of European coastal defence. Its restoration offers a rare glimpse into a World‑One‑era fortification that survived both the Treaty Port standoff and the passage of time. Whether you are a military‑history enthusiast, a family looking for an educational outing, or a walker seeking dramatic sea views, Lonehort provides a compelling, immersive experience on one of Ireland’s most picturesque islands.

Plan ahead – tours run only during the summer months and require advance booking. Check the official website for the latest schedule and any special events, such as heritage‑week children’s tours or seasonal art exhibitions held in the restored northern section.