A geological rift split the land from coast to coast, once dividing Scotland in two. Glaciers deepened the trench and the result today is a long glen of steep-sided, wooded mountains and dark, mysterious lochs. Castles and forts abound, bearing witness to the Great Glen’s strategic importance and enhancing its dramatic grandeur with intrigue and nostalgia. And, of course, there’s the legendary Loch Ness monster, elusive but irrepressible, and still attracting scientific interest – keep that camera to hand.