Clomantagh Hill mountain info maps weather Clomantagh Hill is the 10049th highest peak in the British Isles and the 972nd tallest in Ireland Also known as Killoshulan Elevation 349.0 m (1145 ft) Prominence 224.0 m (735 ft) Category Marilyn Hill / mountain range South Midlands Nearest town OS map sheets OSi50: 060 (Kilkenny, Laois, Tipperary)