Park on the side of the Mellary to Newcastle road just after you cross the border to Tipperary and past a now roofless constabulary barracks. There is room here for 5-6 cars.
Cross the road, down an embankment, over a rusty gate and follow the track toward. Knocknasculloge.
At a right angle corner on the track , near a forest edge S11780 07951 A , cross a wire fence.
Walk uphill about 100 meters to the summit over very rough ground. The summit is covered with old turf cutting banks. Linkback: https://mountainviews.ie/summit/496/comment/5255/

Having just bagged Knocksculloge, I headed NW, following a substantial track all the way down to S11780 07951 A, where the track forks sharply. I turned left for 100m until I reached a rusty gate. Crossed this to follow a track along the edge of the forestry for another 100m, leading to another track. Walked SE for a bit along this until I found a spot where I could ascend the steep bank and then proceeded directly south for about 500m to reach summit. The final part of this was rough going, over knee-deep heather and uneven ground. The summit is (almost) marked by a pile of stones, but a single pointy rock a few metres away marks the actual high point. This was the last summit in a day's hillwalking of what I named after the Motown group, The Four Tops...Knocknasheega, Broemountain, Knocksuclloge and Knocknanask. I started the first two at S131 065 B and the second pair a short distance away at S128 065 C. FYI did all four in just over 4 hours. Linkback: https://mountainviews.ie/summit/496/comment/23284/

With the introduction of the 400 meter list new opportunities presented themselves in the four peaks at the far eastern end of the Knockmealdowns. I parked the car at S11184 08337 and headed over a rusty gate and followed the track to Knocknasculloge. I retraced my steps back as far as S11780 07951 A and climed the 100 meters to the summit over very rough ground. The summit is covered with old turf cutting banks.
The view back towards the higher peaks and over to the Comeraghs and Slievenamon is worth the little effort needed to climb Knocknanask .
I am sure my photo taken on a damp Sunday does not do it justice.
From left to right Knocknafallia, Knocknagnauv, Knockmeal, and Crohan West Linkback: https://mountainviews.ie/summit/496/comment/2767/