Ben Bulben
The Benbulbin and Kings Mountain Loop Walk is a moderate to strenuous 3.5 hour (8 km) walking route to the unique and distinctive plateau of Kings Mountain (462m) also known as Fionn mac Cumhaill (McCools) Table and the spectacular vertical gullies and cliffs at Benbulbin Head (526m). This walk is within a short drive of Sligo in the north west of Ireland. This is a great walking route with spectacular scenery at every turn and is relatively short allowing for a nice half day walk.
Link: https://www.activeme.ie/guides/walks/benbulbin-and-kings-mountain-loop-walk/