Croaghaun
Croaghaun ( Irish : Cruachán ) is a mountain on Achill Island in County Mayo in Ireland , whose northern foothills form the highest cliffs in Ireland and the third highest in Europe at 664 meters .
Croaghaun is located on the westernmost part of Achill Island.
Coordinates: 53 ° 59 ′ N , 10 ° 12 ′ W