Cuillin and H MacInnes. A longer challenge, known as the "Greater Traverse" includes all the Skye Munros, though omitting some gabbro outliers: this involves continuing on to Clach Glas and Blaven. This traverse was first done independently by two parties, in the summer of 1939, with I Charleson and W Forde claiming precedence over W. H. Murray & R. G. Donaldon a few weeks later (see W. H. Murray's book for details of his traverse). The list below shows all the Munros, Corbetts and Grahams of the Cuillin. It, therefore, excludes peaks such as Clach Glas, which do not meet the
Geology of Skye Part of the magma chambers for the volcanoes are exposed at the surface as major intrusions of gabbro and granite. These coarse-grained igneous rocks are relatively resistant to erosion and now form the Cuillin hills. The Black Cuillin are formed of gabbro, which erodes to form the characteristically jagged outlines, although this is in large part due to the many minor intrusions, such as dykes and cone sheets that cut the gabbro. The Red Hills are formed of granite and have a more rounded topography. All pre-Quaternary rock types on the island are affected by a major swarm of dykes,