Coolnasillagh Mountain

Rising above the Glenshane Pass in County Londonderry, this sprawling Tump forms part of the eastern Sperrins. Its broad, heather-clad slopes are designated as an Area of Special Scientific Interest, preserving a significant expanse of blanket bog. Walkers reaching the summit are rewarded with clear views across the Moyola Valley toward Slieve Gallion.

• •The name derives from the Irish 'Cúil na Saileach', which translates as 'corner of the willows'. This likely refers to a sheltered nook at the base of the hill where willow trees flourished in the damp Sperrin soil.
• •It is designated as an Area of Special Scientific Interest (ASSI) due to its high-quality upland blanket bog and wet heath, habitats that support breeding populations of red grouse and golden plover.
• •From the summit, the view extends west toward Sawel Mountain, the highest peak in the Sperrins, while Lough Neagh is often visible to the southeast on clear days.
• •Navigating the summit plateau often involves more bog-hopping than actual walking, making it an excellent place to test exactly how waterproof your boots claim to be.