This "new" 500+ summit (as per MV not geologically speaking!) is one which many will have crossed over as they have been on their way to Carn main summit probably to get to Slieve Muck ultimately.
Park at Ott car-park J280279 A (small, very quickly full on a Sunday morning). The Ott track goes SW over the NE shoulder of Ott ( which can be summitted in passing) then further up to the stile at J268291 B. Here if energetic one can go north to the 700+ toughies or if feeling like a hobbit on an epic journey move on SW to the lonely but atmospheric Doan, or in this case, turn South and within minutes be on Carn Mtn N Top. Linkback: https://mountainviews.ie/summit/1493/comment/18180/