To get to the starting point for a walk up and down this hill take a minor road off the N56, just south of Crolly at B833 197 A and follow it SSE for about 6k to a turn off to the right at B862 145 B. Go right for about 100m to B8622814313 C where a rough farm track goes off to the left (E). This is the start of the walk. Park carefully to avoid any obstruction.Follow this track for about 750m to B8689714085 D. Leave the track at this point and go down right to a wooden farm bridge B8692014055 E and cross over the Owencrovarra River. From here go NE up the wide heather covered slope, past some rocky up crops, for about 2.5k to the top. The high point lies on a broad heathery moorland and is marked by a small cairn of stones B88911 15185 F and close to a small pond. Return by way of ascent. A more preferable way to climb this hill is to include it as the final top in a round of 5 starting with Grogan More, then Crocknafarragh, Crocknafarragh SE Top and Crockglass. On its own it has little to commend it as a hillwalking experience. Linkback: https://mountainviews.ie/summit/755/comment/5514/

I climbed or more correctly traversed Addernymore from NE to SW on 10 Aug as the final hill in a round of five tops that I had not previously visited. My approach was from Crockglass summit B8923016629 G by heading down to Pt 352 B8920016000 H over a very wet and sticky patch of bog requiring much clambering in and out, up and down, numerous peat hags. (For previous part of route see Crocknafarragh SE Top.) After this boggy area was crossed the slope up the hill was much more pleasant and gentle to the top. The top of the hill is marked by a small cairn and is close to a small pond. It is on a broad, flat, heathery moorland (see photo). On the way down SW there was much heather and some rock but the going was relatively easy. My only concern was that my choosen reference point was at a stream that had to be crossedI may be impassable due to the heavy rain of recent date. I need not have worried as it led me down, as I hoped it might, to a wooden footbridge not marked on my map B8692014055 E to link up with a rough farm track B8689714085 D which I then followed out WNW to to a junction with an unsurfaced road B8622814313 C. From here I turned right and walked the short distance to a minor road where a right turn and some 6k of road walking brought me back to my starting point for the round B8387418575 I, at a church car park and from where I had ascended my first top of the day Grogan More. For anyone with access to a second car or a pick up the road walking can easily be eliminated by parking at a convenient point near B8622814313 C. This would also be the place to park for a walk up and back down Addernymore although it would be a long slog with little satisfaction. The total distace covered in my circular walk was 18.35k including the 6k road walk at the end. The walk out to the top and back would be some 8k. (For details of the first part of my overall route see Comments for Grogan More.) Linkback: https://mountainviews.ie/summit/755/comment/6007/

One giant sod of turf, marked by horrible peat hags to the north and a boggy valley to the south! Having said that, descending to the west brought us to a minor road with stunning views over Loughs Ascardan and Keel, which was the hill's only redeeming feature! Linkback: https://mountainviews.ie/summit/755/comment/23946/