Overview
The Dartry Mountains stretch across the north‑west of Ireland between Lough Melvin, Lough Gill and Lough MacNean. This dissected karst landscape is famed for its sheer limestone cliffs, glacial valleys and a collection of 19 recognised summits. While Truskmore (647 m) tops the range, the two peaks highlighted here – Ben Wisken (514 m) and Tievebaun (611 m) – are among the most striking and accessible, offering dramatic scenery, rich folklore and excellent hill‑walking routes.
History & Background
Ben Wisken – nicknamed The Frozen Wave for its undulating limestone crest, dominates the northern edge of the Gleniff valley. Formed by the last glaciation, the wave‑shaped ridge sits opposite the iconic Benbulben and is cloaked in peat. Local legend tells of Diarmuid and Gráinne’s Cave, the highest cave in Ireland, said to have sheltered the mythic lovers. The cave lies on private land and the steep access path is not recommended for the public. Scattered medieval cashels, stone walls and megalithic monuments dot the lower slopes, testifying to centuries of human activity.
Tievebaun (Irish Taobh Bán, “white side”) straddles the Sligo–Leitrim border and is the highest independent summit in Leitrim. Its bright white limestone outcrops – especially the arrow‑shaped Eagle’s Rock and the rugged Hag’s Leap – give the mountain its name. Historically the ridge marked a natural county boundary, a fact still visible as a low stone wall that follows the ascent. Near the summit, an information panel beside Glencar Waterfall quotes W. B. Yeats’s The Stolen Child, linking the landscape to Irish literary heritage.
What to See & Do
Ben Wisken
- Gleniff Horseshoe Loop – a 10–13 km moderate circuit of quiet country roads and forest tracks. The route offers repeated vistas of the Dartry plateau, Donegal Bay and the Ulster coastline, with an overall ascent of about 40 m.
- Summit Panorama – 360° views stretch from the cliffs of Donegal Bay to the Blue Stack Mountains, with Benbulben and the Sligo coastline framing the horizon.
- Folklore Spotting – while the Diarmuid and Gráinne’s Cave is not publicly accessible, the surrounding cliffs and ancient cashels provide a tangible sense of myth.
Tievebaun
- Eagle’s Rock – a stark white limestone arrow that points uphill, perfect for photography.
- The Hag’s Leap – a dramatic northern pinnacle that attracts both walkers and picture‑takers.
- Summit Cairns – twin cairns on the Leitrim side and a solitary cairn marking the true summit (611 m).
- Panoramic Views – sightlines include the Sligo coastline, Slieve League across Donegal Bay, Benbulbin to the west and the glacial Glenade Valley below.
- Classic 18.5 km Loop – begins at the Glencar Lake north‑shore car park, climbs a steep forest road on the southern edge of the Dartry plateau, then follows a bog track past the upper Glencar Waterfall (with Yeats’s poem panel) before circling back via a stile‑crossed ridge.
Geology & Landscape
The Dartry range is a classic example of karst limestone terrain. During the last Ice Age, glaciers sculpted deep U‑shaped valleys and left behind a plateau of exposed Carboniferous limestone. Weathering has produced the distinctive wave‑shaped ridge of Ben Wisken and the bright white faces of Tievebaun, while peat blankets much of the higher ground, giving the area its muted green‑brown hues in winter.
Flora & Fauna
The limestone soils support a mix of heathland and grassland species. In spring you may spot wild thyme, bell‑heather and the occasional orange‑flowered Primula veris. The open moorland is favoured by red‑kites, peregrine falcons and the occasional Irish hare. In the summer months, the higher slopes can host skylarks and meadow pipits, while the boggy sections are home to sphagnum mosses and bog cotton.
Seasonal Highlights
- Spring (April‑June) – Wildflowers are at their peak and the weather is generally mild, making the longer loops more enjoyable.
- Summer (July‑August) – Long daylight hours provide ample time for extended hikes; the summit cairns are especially photogenic in the golden light.
- Autumn (September‑October) – Colours shift to russet and gold; the cooler air often brings clearer views across the Atlantic coastline.
- Winter – The landscape takes on a stark beauty, but snow and ice can make the bog tracks slippery. Only experienced walkers should attempt the higher sections in icy conditions.
Nearby Attractions
- Benbulben Forest Walk – a gentle loop around the iconic table‑mountain, ideal for families.
- Glencar Waterfall – a short detour from the Tievebaun loop, with a Yeats‑themed interpretation panel.
- Ballygawley Mountains – another limestone range a short drive north, offering additional ridge walks.
- Carrowmore Megalithic Cemetery – a world‑renowned stone‑circle complex just 20 km east of the Dartry foothills.
- Sligo town – the nearest major town, providing accommodation, restaurants and a regular bus service to Gleniff and Glencar.
Practical Information
- Access Points: Gleniff Horseshoe starts from the Gleniff village car park; the Tievebaun loop starts at Glencar Lake north‑shore car park.
- Nearest Town: Sligo, 20 km to the west, offers a range of B&Bs, hotels and public transport links.
- Public Transport: Bus Éireann route 70 runs between Sligo and Gleniff, stopping close to the trailhead (check the latest timetable).
- Difficulty: Both routes are graded moderate. The Ben Wisken loop is relatively gentle, while the Tievebaun loop includes steep forest sections and boggy ground; good waterproof boots are essential.
- Navigation: The area is well‑marked on OSI Discovery Series maps (sheet 44). A handheld GPS or a reliable map and compass are recommended, especially on the bog tracks.
- Best Seasons: Late spring to early autumn offers the clearest views and drier ground. Winter walks are possible but require experience in icy, exposed terrain.
- Parking & Facilities: Small free car parks are available at both trailheads. No permanent facilities exist on the mountains themselves; carry water, snacks and a basic first‑aid kit.
- Safety Tips: Weather can change rapidly; check forecasts before setting out. The Diarmuid and Gráinne’s Cave path is hazardous and not open to the public. Stay on marked tracks to protect the delicate limestone and peat habitats.
- Wildlife: Keep an eye out for red‑kites, peregrine falcons and the occasional Irish hare on the open moorland.
Enjoy the blend of geological drama, mythic history and sweeping Irish vistas that make the Dartry Mountains – and especially Ben Wisken and Tievebaun – a rewarding destination for walkers, photographers and anyone keen to experience the wild heart of Sligo and Leitrim.