The Lamkhaga Pass, which connects northeastern Garhwal to Kinnaur in Himachal Pradesh, is surrounded by a tantalising landscape of snow and mountains, and an air of mystery. The long and, at times, treacherous trek to the pass involves steep ascents over scree and ice, and precarious crossings of glaciers and streams. The trail gains over 8,000ft in the space of a few days &mdash from Harsil at 9,000ft to 17,335ft at the pass. The rewards, though, are many &mdash lush green valleys, stunning vistas of towering peaks and lakes, glaciers and enormous fields of snow.