The Corbetts (Scotland's 2500-2999ft mountains) are every bit as interesting as the Munros (3000ft and over), often clear when the Munros are in cloud, walkable on short winter days, free of the peak-bagging crowds of their taller neighbours. Volume 1 of this two-volume Cicerone guide covers the Corbetts to the south of the Great Glen, which runs from Fort William to Inverness enclosing Loch Ness,...