This route starts from a parking area just outside Fitzsimons Park which is SW of Kilmacanogue. There are a series of small tracks leading west from the general area of the road to Fitzsimons Park. Take one of these and get onto the track leading SW onto the ridge which goes North from the main summit.
Leaving the summit head on the tourist track south branching off after around 350m to the East. There are a series of less pronounced tracks that gradually circle round. The track shown probably went too far east, coming close to two substantial ravines which should be avoided.
All in all an interesting track, quite wild and rugged in places.