at the apex around deep valleys. Around the Fraughan Rock Glen and Arts Lough in the east are Benleagh, and Clohernagh; around the glen of the Carrawaystick River and Kelly's Lough in the south-east are Corrigasleggaun, and again Clohernagh; around the glen of the River Ow in the south are Corrigasleggaun and Slievemaan; and finally, around the larger Glen of Imaal in the west are Ballineddan Mountain, Slievemaan, Camenabologue, Table Mountain, Lobawn, and Sugarloaf. Lugnaquilla is the highest mountain of the Wicklow Mountains range, and the highest mountain in Ireland outside County Kerry. Lugnaquila's large prominence qualifies it to meet the P600 classification (mountains known as the "Majors" in Britain and Ireland), and the Britain and Ireland Marilyn classification. Lugnaquilla is the 4th-highest mountain in the MountainViews Online Database, 100 Highest Irish Mountains. It is the 432nd–highest mountain, and 21st most prominent mountain, in Britain and Ireland, on the Simms classification. Lugnaquilla is regarded by the Scottish Mountaineering Club ("SMC") as one of 34 Furths, which is a mountain above in elevation, and meets the other SMC criteria for a Munro (e.g. "sufficient separation"), but which is outside of (or furth) Scotland; which is why Lugnaquilla is referred to as one of the 13 Irish Munros. Hill walking The shortest route to the summit of Lugnaquilla is the 13-kilometre 4–5 hour Glen of Imaal Route (the "Tourist Route"), that starts at Fenton's Pub in the Glen of Imaal, and goes along the military access road via a grassy hill to Camarahill () , and then up to the summit of Lugnaquilla. The route crosses into the military artillery range, so walkers should check the range operating times in advance. The 15–kilometre 5–6 hour Glenmalure Loop is described as "the most scenic circuit to Lugnaquilla". It starts in the Baravore car park () at the head of the Glenmalure valley and summits Lugnaquilla via the cliff–fringed hanging valley, Fraughan Rock Glen (the Glen is entered via the path at the Glenmalure Hostel); but returning via Cloghernagh , and down to the scenic Arts Lough , described as "one of the region's most beautiful sights", before descending back to the start of the Fraughan Rock Glen (or descending via Kelly's Lough and the glen of the Carrawaystick River). The third, and least frequented route is the 16–kilometre 6-hour Aghavannagh Route, which starts at the Aghavannagh Bridge () and walks the long forest