From Irish Climbing Wiki
The northern slopes offer many 15m-30m climbs in the Diff to Severe range on excellent rock. In the NW corner close to the ridge is a clean face, about 35m, criss-crossed by slight diagonal cracks. This is -
Posterity Slab (right side) 35m S
P O'Halpin, W. Hannon, D Rowe. 1963
Climb the slab for about 15m and then move right to the ridge.
Posterity Slab (middle) 30m HS
F Winder, Ms E Healy. Early 1964
The route goes up a slab and groove.