Slieve Daeane mountain info maps weather Slieve Daeane is the 12249th highest peak in the British Isles and the 1145th tallest in Ireland Also known as Sliabh Da Ean Elevation 275.0 m (902 ft) Prominence 217.0 m (712 ft) Category Marilyn Hill / mountain range Ox Mountains Nearest town OS map sheets OSi50: 025 (Sligo, Leitrim, Roscommon)