The mountain with the highest cliffs in Ireland is Croaghaun in County Mayo. At 664 m (2,178 ft), they are also the third-highest cliffs in Europe. The Croaghaun Cliffs loop around the uninhibited northwest of Achill Island and are accessible only by climbing to the top of the mountain. Hikers are then rewarded with breathtaking views of a vast array of sheer rock faces.
Croaghaun is Europe’s third-highest cliff:

Image: Boholaman