Cnoc an Chuillinn lies in the eastern section of the MacGillycuddy's Reeks, Ireland's highest mountain range. It is at the start of a high ridge section that, moving eastwards, includes Cnoc an Chuillinn East Top (a subsidiary summit of Cnoc an Chuillinn, but which is itself a Vandeleur-Lynam), Maolán Buí , Cnoc na Péiste , The Big Gun and finishes with Cruach Mhór .