Overview
Lough Gara is known for its crannógs, the remains of man-made prehistoric islands, and most of them only came to light when the lake was partly drained in the 1950s. It’s a shallow, reedy basin on the border between south County Sligo and County Roscommon, west of Boyle, covering 12.57 km² and sitting 66m above sea level. It runs about four miles north to south and widens to two and a half at the centre. Water comes in from the Lung River in the south-west and the Breedoge in the south-east, and leaves to the north-east through a mile-long channel, Lower Lough Gara, before becoming the Boyle River and running on toward Lough Key and the Shannon.
The country around is open farmland, peat bog and the low line of the Curlew Mountains. Boyle and Ballaghaderreen are both a little over four miles off. Come for the birds and the archaeology rather than a swim: this is a lake to watch from the edge, not to plunge into.
The crannógs
Long before its present name the lake was Loch Techet. When the O’Gara clan took control of the Coolavin district in the 13th century it became Loch Uí Ghadhra, the lake of the O’Garas; the first written reference is from 1285, and the name held even after the family lost their lands around 1650.
Its man-made islands are what set it apart. Most were exposed by a drainage scheme in the 1950s that dropped the water level and left them standing clear of the shallows. Excavations turned up Iron Age, Bronze Age and early Christian material, but it was the Swedish archaeologist Christina Fredengren’s five-year research programme that reshaped how they’re understood: her work, published as Crannogs (Wordwell), argues that some were built more than two thousand years ago and served less as defensive boltholes than as long-lived community sites, fishing platforms and markers of territory. In Monasteraden, a small fountain monument unveiled in 1999 maps the lake’s outline and remembers the local heritage champion Terry Madden.
Birds and wetland
The reed beds, shallow margins and open water make Lough Gara an important wintering ground for wildfowl. The National Parks and Wildlife Service lists whooper swans and Greenland white-fronted geese as qualifying species for its Special Protection Area. The geese arrive from the Arctic each autumn. Early morning is best, when the water is still and the birds are feeding along the weed beds. Watch from established public ground and keep away from feeding or resting birds.
Walking the shoreline
The Beara Breifne Way follows the Lung River north and along the eastern side of the lake, past a string of Iron Age ringforts, and local loop trails cover the bog and lakeside. Routes, signage and facilities along the shore change, so check current information locally before you set out and stick to established public paths and roads.
Activities at the lake
On the Roscommon shore near Boyle, Lough Gara Country Pursuits is a privately run activity centre offering supervised activities such as horse riding, shooting, falconry and archery. Its programme and booking arrangements change, so check directly with the centre for what is currently on offer, and book ahead.
Fishing
Inland Fisheries Ireland lists pike and other coarse fishing on the Boyle system and describes access to Lower Lough Gara. Being shallow, the lake has perch, roach and bream along the reed edges and weed beds as well as pike. Check which section you intend to visit and confirm shore access, permission and current rules. Use established launch points, wear a lifejacket on the water and check the forecast. Tackle shops in Boyle and Ballaghaderreen carry gear and bait.
Staying nearby
Accommodation is available in Monasteraden village and in Boyle and Ballaghaderreen; check current options before you travel.
Within a short drive:
- Moygara Castle: the ruins of a 16th/17th-century O’Gara stronghold on the north-western shore, best seen from a distance.
- Coleman Irish Music Centre: at Gurteen, celebrating the fiddler Michael Coleman and the south Sligo playing style.
- Lough Key Forest Park: boating and castle ruins.
- Boyle: King House, pubs and markets.
Practical information
- Access: confirm the exact access point, parking and any permission needed before you go. There is no single marked entrance to the lake.
- Getting there: easiest by car, via the N4 (Boyle) or N5 (Ballaghaderreen). Check current bus services at Boyle and Ballaghaderreen.
- What to bring: boots for boggy ground, binoculars for the birds, and waterproofs.
If you do one thing here, come early on a winter morning and watch the swans and geese on the water from a public vantage point, with the crannógs breaking the surface behind them.