A notable feature on its northwestern head it the deep corrie of Lug More (or ), from which the Glencullin River feeds into the neighboring Lough Glencullin (the bottom of the corrie is also called the Glencullin valley). Surrounding the corrie is the long ridge of Ben Lugmore and its several subsidiary summits, Ben Lugmore East Top , and Ben Lugmore West Top ; while cutting across the headwall (from bottom left to upper right), is grenn grassy feature known as The Ramp, which is used by climbers to gain the ridge of Ben Lugmore from the shores of Doo Lough.