One way of reaching the summit is to start from the T junction at V839786 C. Walk NW of this beside Cummeralooderry Stream until you gain the flattish ground where the stream turns left (West) at around say 836794 D. Then head for the summit. Don't go up or down beside the lower parts of the Glasheengarriff stream. It's covered in high rushes, with water and rock in the cracks.
This summit is the eastern end of the Dunkerrons, that great ridge of high ground that finally ends near Waterville. The summit and the ridge to it from Knocknabreeda are boggy and flattish underfoot, however the position of the summit gives great views from an unusual angle. Take a look at the Upper Killarney Lake. The shadowed summit just beyond it is Torc Mountain while the snow-covered summit top right is Mangerton. Linkback: https://mountainviews.ie/summit/442/comment/2554/