Overview
The cross-slab at Fahan carries the only Greek inscription known from early Christian Ireland – a doxology, ‘Glory and honour to the Father, Son and Holy Spirit’, cut into Donegal stone by a monk who somehow knew the wording sanctioned at a Spanish church council in 633. It stands in the graveyard of Othan Mór, the 6th-century monastery founded by St Mura, a disciple of St Colmcille, on the eastern shore of Lough Swilly.
The site sits at Fahan on the R238 between Buncrana and Derry, a marked stop on the Inishowen Heritage Trail, and the slab is visible from the road. It marks the original settlement here: the roofless walls of a later church, an old graveyard, and the cross-slab that predates Ireland’s famous high crosses. Plan for about twenty minutes at the slab – the reward is in reading both faces closely, not in a long walk.
The cross-slab and monastic ruins
Dated to the 7th century – though some scholars now argue it may be later – the Fahan Mura cross-slab is reckoned a direct forerunner of the classic Irish high crosses at Monasterboice and Clonmacnoise. Both faces are covered in triple-banded interlace ribbonwork. The west face has a central tree-of-life design, five circular sun motifs, and two flanking figures traditionally read as the High King Áed Uaridnach and St Mura.
Turn to the reverse for the Greek inscription – the doxology whose wording follows the form set at the Council of Toledo in 633. Two figures stand at the foot of the slab with birds beside them, an early Christian symbol of resurrection. The slab is said to mark St Mura’s burial place, and it is the subject of a detailed interactive 3D model from the Discovery Programme that lets you turn the carving and study the worn east face.
Behind it, the roofless nave and stone walls outline the monastic precinct. Viking raids in the 10th and 13th centuries damaged the earlier settlement, but the community rebuilt; by the 16th century a new church stood here before the site slipped into quiet ruin. The Fahan Heritage group and Donegal County Council now keep the grounds stable and accessible.
St Mura’s legacy and holy well
The site’s name, Othán Mór, is usually glossed as ‘great hill’, fitting for the rise above the lough. St Mura’s reach went well beyond Fahan: his crozier, the Bachall Mura, is held by the Royal Irish Academy, and his bell-shrine rests in London’s Wallace Collection. His feast day, 12 March, is still marked locally, with community groups sometimes holding a short commemorative service near the ruins.
About 350 m north-west of the churchyard, towards the shore, a short walk from the main path leads to St Mura’s holy well, tucked among native grasses and low stone walls, where locals still leave small offerings. Wells like this were traditionally visited for healing, gratitude or quiet reflection, and the practice continues here in a low-key way.
The graveyard and surrounding landscape
The graveyard around the ruins spans medieval, Plantation and modern burials – weather-worn headstones and moss-covered slabs under an open hilltop with long views across Lough Swilly and the Inishowen peninsula. On a clear day the water shifts through slate and silver, with seabirds working the shoreline below. The ground is maintained by local residents; keep to the paths and off the headstones.
Practical information
- Opening hours and entry – open 24 hours a day, seven days a week. No admission charge.
- Parking – a small lay-by opposite the entrance gives free parking, roughly a 200-metre walk to the cross-slab.
- Facilities – there are no toilets, cafés or information boards on site. The nearest public toilet is at the Railway Tavern in Fahan village, with cafés and shops within walking distance.
- Accessibility – the route to the slab crosses uneven stone and grass, and a fully wheelchair-friendly path is not available, so visitors with mobility restrictions may find access difficult.
- Dogs – well-behaved dogs are welcome but should be kept on a lead through the graveyard and ruins out of respect for the grounds.
- What to bring – sturdy footwear for the uneven terrain, a wind-proof layer in winter, and binoculars for wildfowl and otters along the lough’s edge.
Getting there and nearby stops
Othan Mór is easily reached from Letterkenny or Derry: take the N13, then the R238 into Fahan. Foyle Coaches run a daily Letterkenny–Fahan service with a stop a short walk from the site, and the low-traffic R238 suits cycling between the coastal villages.
Down at Fahan’s waterfront, the Railway Tavern sits on the lough’s edge and is a reliable stop for food or coffee. Lisfannon Beach is a couple of kilometres north along the Inishowen shore, and the Inch Island wildfowl reserve is a short drive south. Ballymastocker Bay’s Blue Flag strand lies across the water on the Fanad peninsula – close as the crow flies, but a long loop by road through Letterkenny.
For the clearest read on the slab’s interlace, come in late afternoon, when the low western sun rakes across the tree-of-life face and lifts the carving out of the stone.