Illauntannig – The Largest Maharee Island and Early Christian Monastic Ruins

📍 Maharee Islands, Kerry

🏛️ Attraction

Last updated: 28 April 2026

Overview

Illauntannig (Irish: Oileán tSeanaigh) sits a mile off the northern tip of the Magharee Peninsula, the north‑shore arm of the Dingle Peninsula in County Kerry. Known locally as one of the “Seven Hogs”, it is the biggest of the eight Maharee islands and dominates the sheltered Magharee Sound that separates the peninsula from the Atlantic. The island’s low, grassy profile, a sandy beach on its east side and a striking stone‑wall enclosure make it instantly recognisable from the water.

The island is uninhabited except for a seasonal farmhouse that is let to visitors from April to September. The surrounding waters are famed for crystal‑clear visibility, making Illauntannig a favourite anchorage for yachts, a launch‑point for snorkellers, and a gateway to the rich marine life of Tralee Bay and Brandon Bay.

History

The monastic settlement on Illauntannig dates back to the 5th‑7th centuries, founded by St Seanach, brother of the better‑known St Senán. The site is classified by the Office of Public Works as an Early Christian enclosure and is protected as a National Monument. Its stone cashel encloses two small oratories (one boat‑shaped), three beehive‑style clochán, three leacht platforms, a burial ground, a 1.8 m stone cross and a souterrain that runs about 40 m beneath the enclosure.

Archaeological evidence shows the island was used long before the monks arrived; a shell midden within the walls has been radiocarbon‑dated to the late Neolithic or early Bronze Age. The monastic complex continued to be occupied into the 12th century, as indicated by Romanesque‑style tooling on the altar of the larger oratory. Artefacts such as a bronze‑coated hand‑bell (now in the National Museum of Ireland) and a hammer were recovered from the site.

The islands were inhabited until the early 1980s, after which they reverted to seasonal grazing. The farmhouse on Illauntannig remains the only modern dwelling, offering a rustic, off‑grid experience with a hand‑pump well and oil‑lamp lighting.

Getting There

Access – The nearest mainland landing point is Scraggane Pier, near Castlegregory. Boats (currachs, small yachts or chartered tenders) approach from the north or south, using the well‑marked initial fix at 52° 20.006’ N, 10° 0.404’ W. The protected anchorage lies east‑by‑north‑east of the farmhouse; a depth of 2 m is sufficient for most shallow‑draft vessels. Mariners should note a foul‑ground bank with Thurran (Wheel) Rock that dries to 2.5 m at low tide; the rock is visible in the clear water and should be avoided.

Landing – A steep, sandy beach on the island’s east side provides a safe tender landing at high tide. At very low tide the beach can become a narrow strip, so timing the landing with the tide table is advisable. Small mooring buoys with floating ropes are positioned near the beach; keep a short distance from the rocks to the south.

Seasonal Farmhouse Stay

From April to September the farmhouse can be rented weekly. It is a self‑catering base with a hand‑pump well, oil‑lamp lighting and no mains electricity. Guests can watch sheep and cattle graze the island’s summer pastures and enjoy the solitude of an off‑grid setting. Bookings are made directly with the local farmers or via the Castlegregory tourism office. No admission fee is charged for visiting the monastic site, but the enclosure is a protected National Monument, so visitors should stay on the marked paths and respect the information plaque on the approach.

Wildlife & Birdwatching

The island’s flat, grassy terrain supports nesting Oyster Catchers and Arctic Terns. Seabirds are abundant, and the surrounding waters host basking sharks, blue sharks and occasional dolphin pods during summer. As an Important Bird Area, the island is monitored by BirdLife International; visitors are asked to keep a respectful distance from nesting sites.

Activities

  • Monastic Ruins – Walk the drystone walls to the east‑side enclosure. The principal oratory, rectangular and mortar‑free, still shows its original doorway and a surviving altar slab. The second, boat‑shaped oratory features a narrow west‑entry and a lintelled east window that once let in light. The three beehive huts cluster around the oratory, and the three leacht platforms, each capped with quartz pebbles, mark probable burial sites. A stone cross stands beside the central leacht.
  • Souterrain Exploration – The underground passage offers a glimpse into early monastic engineering; it is safe to enter but remains unguided, so a cautious step is advised.
  • Snorkelling & Diving – The clear waters around the island’s rocky outcrops are ideal for snorkelling and diving, with abundant marine life and good visibility.
  • Island‑Hopping – At low tide the tiny island of Reennafardarrig (about 100 m away) can be reached on foot. It bears the ruins of a subsidiary monastic outpost and a wild‑flower‑strewn beach, offering a quiet retreat.

Nearby Islands & Walks

  • Ahamore Abbey – The early‑Christian site on Ahamore Island lies a short boat ride north‑west of Illauntannig and makes an excellent companion visit. [/ahamore-abbey/]
  • Beginish Island – Another historic island with a well‑preserved monastic settlement, reachable from the same launch points. [/beginish/]
  • Barrow Harbour – Provides additional launch facilities and a scenic coastal walk. [/barrow/]

Practical Information

FeatureLatitudeLongitude
Illauntannig (centre)52° 19.676’ N10° 0.950’ W
Initial Fix52° 20.006’ N10° 0.404’ W

Nearby Harbours – The island lies 1.2 nm SSW of Scraggane Bay, 3.9 nm S of Castlegregory, and 5.6 nm ESE of Barrow Harbour, offering convenient launch points for day trips.

Conservation – As an Important Bird Area, the island is monitored by BirdLife International. Visitors are asked to respect nesting sites and avoid disturbing wildlife.

Further Reading – Detailed site maps are available through the Historic Environment Viewer and the Office of Public Works website.

Illauntannig offers a rare blend of early‑Christian heritage, unspoiled natural scenery and a tranquil maritime setting. Whether you are a sailor seeking a sheltered berth, a history enthusiast tracing Ireland’s monastic trail, or a wildlife lover hunting seabird colonies, the island rewards the effort with a sense of timeless isolation that few other Irish sites can match.