The start of this walk is at a point on the old Kenmare to Killarney road as others have described. There is parking for about 3 cars.
Reaching the top of Knockanaguish is a relatively easy climb. The top area has a number of knolls and also a fine view towards Mangerton though this was somewhat misty on the occasion we were there.

Dropping back to the col before Peakeen requires some care. Go to the east side of Lough Nagannee which as you can see from the picture has cliffs above it. As others have said, take care here.

One gorgeous bog plant visible here and in much of the SW of Ireland is the Large-flowered Butterwort Pinguicula grandiflora. Look at the sticky leaves and you can see the insects that the plant catches for nutrients.The top of Peakeen is reached by threading a route through various crags. The view west over the minor western peaks of Peakeen and towards the Dunkerrons is superb. Boughill, Knocklomena etc line up with Mullaghanattin.
Various deer appeared sometimes in groups of up to five or six towards the north of Peakeen. This doe took a good and curious look for over a minute.
Getting to the western peaks of Peakeen, so to speak, is an exercise in working your way through multiple obsctacles such as ravines and boggy land. When there there are some further interesting views for example this one of the big group of very remote high lakes to the north.

Return or should I say trudge back to the old road via the rough ground to the north of the Peakeens.