Starting point is at entrance to Iniscarn Forest (833907 (Point A)) where there is room for several cars.
Follow the forest track for a short distance and then the marked walk (right) through broadleaved trees, mainly beech and holly. This is a great part of the walk following a stream for a good part of the way. This rejoins the forest track where an eye needs to be kept for a track and crossing point over stream on right.
This leads to the forest boundary and gentle uphill walking through the forest, with views of the steep northern side of Slieve Gallion coming into focus. Reach a concrete water tank and cross the fence onto open hillside.
A fenceline heads straight for the top, initially with forest for company but this vanishes as the ground becomes steeper. There is a good 600 ft of steep climbing and the views grow with every footstep! This slope has given me great pleasure in kicking steps in deep drifts and in sliding on my bum for 200 feet for a quick descent.
The fence is crossed just before a large cairn on the NE top. Views stretch out over Lough Neagh to the Antrim Hills, Belfast Hills and the Mournes. Make way down past communication masts and along their service road. Most days there is no other soul up here but on some it is full of paragilders or sunday drivers - either day is good.
Follow the road for 10 minutes and then take the track off to the R which heads for the main summit. Views are dominated by the higher hills of the Sperrins to the W. Yellow topped marker poles guide the way at even intervals but not too obtrusively. The track is quite wet in places and eventually peters out at an old aluminium shipping container marked with "Belfast Steamship Co Container Service". This is a great place for lunch, especially on days with howling winds, rain or snow.
A fence is crossed courtesy of a milk crate either side and a sign welcomes walkers but promotes responsibility. Further makers bring the trig point in short time, 1.75 hours after starting. A memorial is erected here to Ronnie Magwood - I suppose there is no more fitting a place with vast views in all directions, the Bluestacks and Culcaigh being added to those already mentioned - the whole of Ulster basically.
The waymakers continue to Lough Fea, this would be a good traverse of the entire mountain for those with additional transport. Return to the service road for the transmitter and follow it downhill. A rougher farmtrack turns off to the left and this provides peaceful walking back to the road 5 mins from the forest entrance.