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

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

Located on the windswept heights of Aranmore Island, this 227-metre Marilyn offers a rugged, peat-covered ascent. Reaching this summit provides a panoramic view across the Atlantic, stretching from the nearby lighthouse to the distant, jagged profile of Mount Errigal on the Donegal mainland. It is the island’s true high point.

Key Statistics

Find It

Did You Know?

• •The name derives from the Irish Cnoc an Iolair, meaning 'Hill of the Eagle,' a reference to the birds of prey that historically nested on the island’s craggy western cliffs.
• •The summit provides an excellent vantage point over the Rosses, a labyrinthine archipelago of granite islands and narrow sea channels situated between Aranmore and the Donegal mainland.
• •At just over 227 metres, this ridge forms the highest point on any of the islands off the Donegal coast, making it a primary navigational landmark for vessels in the North Atlantic.
• •Success on this hill is entirely dependent on the ferry from Burtonport; if the swell is too high in the Sound, your summit ambitions will remain firmly mainland-bound.