It is a fairly remote trek and is now regarded as the classic route from Kinnaur to Gangotri, which was first crossed by Marco Pallis in 1933. The trek is also known as Chitkul to Gangotri or Harsil to Chitkul trek.
The trek can be done from either side. The beautiful route takes you through some of the most remote areas of Uttarakhand and Himachal Pradesh, like the Jalandhari Gad valley that is covered with flowers, post-monsoon. Though the difficulty is a relative term, the Lamkhaga pass trek is considered the most difficult in Kinnaur-Garhwal Himalayas. The snow in the early season could impede your progress. Harsil is famous for Wilson’s Cottage built in 1864.

