Har-ki-Dun (Har stands for Hari, or Lord Krishna, the blue-god, and Dun means valley), lies in the westernmost Himalayas of Garhwal, sharing its boundary with eastern Himachal Pradesh, and is dominated by the Swargarohini peak (6096m).

It is a believed that the Pandavas of the epic Mahabharata ascended to heaven through Swargarohini (in Hindi, swarg means heaven, and arohini is derived from the word arohan, which means to climb). Har Ki Dun Mountain Trekking will take you to the source of the Karmanasha stream which meets the Obragaad stream below a village named Sankri or Saur, to form the supine river which unites with the Rupin River flowing from Himachal Pradesh, at Netwar, to become the Tons River

Har ki Doon Trek is situated in the Western Garhwal Himalayas, at the base of Fateh Parvat. This cradle shaped valley, South-east of Jaundar glacier is surrounded by dense forests of pine, deodar and other coniferous trees. It is totally covered by a blanket of blue and purple flowers. The surrounding forest is rich in wild life and exotic birds and forms part of the Govind Wildlife Sanctuary & National Park. The main snow clad peaks visible from here are Swarga-Rohini, Bandarpunch and Kala Nag.