Knockacullion [Cnoc an Chuilinn]

Situated on the rugged border between Cavan and Leitrim, this Tump forms part of the boggy upland plateau south of the main Cuilcagh ridge. It offers a quiet, pathless ascent through classic Shannon-side moorland. The broad summit provides clear, unobstructed views across the wild, water-logged landscapes of the Iron Mountains.

• •The name Knockacullion is an anglicisation of Cnoc an Chuilinn, meaning 'Hill of the Holly'. While holly is rarely found on the exposed, peaty summits today, the name suggests a more wooded historical landscape in the sheltered gullies of the Cavan-Leitrim borderlands.
• •The hill sits within the wider Cuilcagh Lakelands Geopark, located just a few kilometres east of the Shannon Pot, the traditional limestone resurgence that marks the source of the River Shannon.
• •From the summit, the most prominent feature on the horizon is the dramatic, flat-topped plateau of Cuilcagh to the north, while the scattered loughs of Leitrim and the slopes of Slievenakilla are visible to the west.
• •Prospective climbers should prepare for an authentic cross-country experience; in this part of the Iron Mountains, the terrain is frequently more liquid than solid, making gaiters a requirement rather than a suggestion.