Cnoc an Iolair - Mullach Thiar [Cluidaniller West Top] [Cluidaniller] (Aranmore Island)

About Cnoc an Iolair - Mullach Thiar [Cluidaniller West Top] [Cluidaniller] (Aranmore Island)

Standing as the rugged high point of Donegal’s Aranmore Island, this maritime summit offers an expansive Atlantic perspective. The terrain is typical of the Irish west coast—exposed peat and heather-clad slopes. Reaching this Marilyn rewards walkers with a staggering panorama that stretches from the quartzite peak of Errigal to the distant Tory Island.

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Did You Know?

• •The name Cnoc an Iolair translates from Irish Gaelic as 'Hill of the Eagle', recalling a time when these birds of prey would have been a common sight soaring over the island's high sea cliffs.
• •As the highest point on the island, the summit provides a clear line of sight to the Aranmore Lighthouse at Rinrawros Point, which has guided ships through treacherous Atlantic waters since 1798.
• •The view eastward across the sound takes in the 'Rosses' area of the Donegal mainland, characterized by a complex, glaciated landscape of countless small lakes and granite outcrops.
• •Despite its modest height of 227 metres, its status as a Marilyn is a result of its total isolation from the Irish mainland, ensuring that every metre of its elevation is hard-won from sea level.