A 3,000-year-old stone fort perched on the edge of an 87-metre sea cliff on Inis Mór — one of Europe's most dramatic prehistoric monuments, with no barrier between you and the Atlantic.
The fort is reached on foot from the visitor centre via a clearly marked path over rising ground and rough natural limestone. The walk takes 20–30 minutes each way. Wear sturdy boots — the final section crosses uneven rock with no handrails.
Three massive drystone walls form outer, middle, and inner enclosures. The inner wall alone used around 6,500 tonnes of stone. Look for the foundations of Bronze Age houses and the stone trough near the west wall.
Outside the middle enclosure, thousands of jagged upright stones form a defensive band known as a chevaux-de-frise — a prehistoric obstacle course designed to break up attackers. Even today, crossing them takes care.
The fort ends abruptly at a sheer 87-metre drop. There is no fence or barrier. On a clear day, views stretch 75 miles along the Irish coastline. Keep a safe distance, especially in windy conditions.
The recently refurbished centre (€1.6m investment) at Kilmurvey Craft Village features interpretive exhibits, scale models, and a multilingual digital app. Free guided tours are available on request from OPW staff.
Just below the visitor centre, this sheltered sandy beach is Inis Mór's only Blue Flag beach — perfect for a swim or picnic after the hike. The water is surprisingly clear on calm days.
A short walk west of the fort brings you to this remarkable natural rectangular pool carved into the limestone platform. Water surges in from underneath — it's a Red Bull Cliff Diving location and utterly unique.
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