Cuillin in colour, particularly in the shade, but when in sunlight the Black Cuillin can appear grey to brown in colour. The main ridge forms a narrow crest, with steep cliffs and scree slopes. The ridge is about 14 km long (measured from Gars-behinn in the south to Sgùrr nan Gillean in the northeast), and curves in an irregular semi-circle around Loch Coruisk, which lies at the heart of the range. The highest point of the Cuillin, and of the Isle of Skye, is Sgùrr Alasdair in the Black Cuillin at 992 m (3,255 ft). The Red Cuillin are mainly composed
Lists of mountains and hills in the British Isles the concept of isolation is embedded in the "qualitative" definition of a Scottish Munro, from the Scottish Mountaineering Club requirement of "sufficient separation" (instead of prominence). Mountains in Scotland are frequently referred to as "hills" no matter what their height, as reflected in names such as the "Cuillin Hills" and the "Torridon Hills". The "Database of British and Irish Hills" ("DoBIH") was created in 2001 "with the intention of providing a comprehensive, up-to-date resource for British hillwalkers". It is now maintained by a team of eight editors, and is described by the Long Distance Walkers Association as "now the most