Slieve Bearnagh
Slieve Bearnagh is one of the Mourne Mountains in County Down, Northern Ireland. It has a height of. Its summit is crowned by two tors with a gap between them, giving it a distinctive shape. The Mourne Wall crosses the summit of Slieve Bearnagh east to west. Paths lead to the cols on either side of the mountain, namely Pollaphuca to the west and Hare's Gap to the east. From the latter, one can also descend southwards to the head of the Ben Crom reservoir.
Geological Features
Like much of the Mourne range, Slieve Bearnagh is composed primarily of granite, formed during the Paleogene period. The tors at the summit are classic examples of granite weathering, creating dramatic rock formations.Ecology
The area surrounding Slieve Bearnagh supports upland heath and bog habitats. Vegetation includes species such as heather, bilberry, mosses, and lichens. Alpine plants such as Dwarf Willow and Cowberry are found among the summit crags, where wind passes through crevices even on calm days. Bird species commonly found in the area include meadow pipits and ravens. Slieve Bearnagh lies within the Mourne Area of Outstanding Natural Beauty, which provides environmental protection for the region. Slieve Bearnagh is listed among the principal peaks in the Mourne Mountains where summit grassland communities are developed. These communities are characterized by the dominance of Festuca ovina, Rhacomitrium lanuginosum, and dwarf Vaccinium myrtillus, and are associated with summit areas lacking peat.Hiking and Access
Slieve Bearnagh is a popular destination for hikers due to its distinctive summit and panoramic views. Common routes include ascents from Hare’s Gap or via the Trassey Track. The track begins at the Trassey Car Park and follows a gently rising path alongside Clonachullion Wood and the Trassey River, gradually transitioning from forested terrain to open mountain landscape. As hikers ascend, the track becomes rockier and steeper, eventually leading to Hare’s Gap, a mountain pass between Slievenaglogh and Slieve Bearnagh. From here, the route continues up stone steps and rugged slopes toward the summit tors of Slieve Bearnagh, offering panoramic views of the Mournes.The Trassey Track is part of the Ulster Way and intersects with the historic Brandy Pad, once used by smugglers transporting goods across the mountains. The approach to Hare’s Gap via the Trassey Track is rocky and rugged, passing through forest edges, river fords, and granite pavements. The cliffs of Spellack and the granite tors of Slieve Bearnagh flank the route, offering dramatic views and geological interest. The Mourne Wall, which crosses the summit, often serves as a navigational aid.