Slieve League is a mountain located on the coast of County Donegal in northwest Ireland. It is the highest sea cliff in Ireland, rising over 600 meters (1,968 feet) above the Atlantic Ocean. Slieve League is often compared to the Cliffs of Moher, but it is less visited and provides a more rugged and wild experience.

The mountain is part of the Slieve League Cliffs, which are a series of cliffs that extend along the coastline. The cliffs offer stunning views of the Atlantic Ocean and the surrounding landscape, including the peaks of the Dartry Mountains to the south.

Slieve League can be reached by car or by foot. There is a car park at the base of the mountain, where visitors can park and then hike up the mountain. The most popular trail is called the Pilgrim's Path, which is a steep and challenging hike but rewards visitors with incredible views of the cliffs and ocean. For those who don't want to hike, there is also a scenic drive that offers views of the cliffs from a distance.

In addition to the stunning natural beauty of the area, Slieve League also has a rich cultural history. The mountain is home to a number of ancient remains, including megalithic tombs, stone circles, and standing stones. The remains of a Christian pilgrimage site, believed to date back to the 6th century, can also be found on the mountain.