The Glenveagh national park is a very beautiful and impressive place to climb, the main face dominates this huge U shaped glaciated valley. It is also Donegal's busiest tourist attraction with a large visitor centre, busy restaurant and the excellent refurbished Glenveagh Castle. This very busy end of the glen provides the most obvious access to the climbing available at the opposite end of the glen. Simply park and follow the crowds around the visitor attractions, once at the cafe in the castle, continue out along towards the huge loch. From here follow the lochside road for approx an hour to a small bothy on your left. Cross the stream by the stepping stones outside the bothy and make a KM long rising traverse to the base of the cliff.
Described above is the busy end of Glenveagh where 99% of the annual visitor enter and visit the Castle and other visitor attractions. For a much quieter and much less busy way to visit Glenveagh, access the park from the opposite end. On the winding B road which travels from An Dúchoraidh (Doochary) to Churchill park at the tiny layby at the far southern end of the park. From here it is a gentle downhill walk following the bridle path down into Glenveagh. This takes you to the opposite end of the Glenveagh loch that travels the length of the glen to the castle and the thousands of visitors. At this end of the park, you will find a much more peaceful experience below triple-tiered falls of Astelleen just to the left of the main rock climbing face at Derrylahan.
Access to the base of the main face is a bit involved and will almost certainly involve a certain amount of wading through very wet blanket bog and at times deep heather. Outside the front door of the open bothy beside the bridal path cross the stream by the stepping stones. After moderate to heavy rain, this crossing is not possible as this narrow stream becomes a raging torrent of white water after only a moderate amount of rain. Once you are across the stepping stones simply work your way to the base of the main wall roughly at its centre. Just below the centre of the wall is an easy scramble that takes you up onto the wide ledge that runs the full length of the wall and gives you access to all the routes.