Har Ki Dun is the valley trek of the Mahabharata – a cradle-shaped hanging valley at ~3,566 m below the Swargarohini massif, reached through one of the state’s most beautiful forest-and-village approaches, with the wooden architecture of Osla and the legend of the Pandavas’ ascent woven into the trail.
Quick facts
| Altitude | ~3,566 m |
| Base | Sankri → Taluka (Govind Pashu Vihar) |
| Duration | 7 days ex-Dehradun |
| Grade | Easy–moderate (longer duration) |
| Best window | March–June (spring bloom), September–November (autumn gold) |
The route in brief
Dehradun → Sankri → Taluka (jeep) → trek along the Supin river through Osla’s carved wooden houses → Kalkattiyadhar → Har Ki Dun meadow camp, facing Swargarohini — the “stairway to heaven” the Pandavas are said to have ascended. Optional Marinda Tal side walk. Return the same way.
Who it suits and practicalities
Beginners with a week to spare; photographers and culture-minded trekkers. Spring brings blooms, autumn brings golden birch and the clearest skies. Package band: ₹8,000–12,000 ex-Dehradun. It pairs with Kedarkantha (same Sankri base) — many operators run combinés. See Mussoorie as the pre-trek base and permit notes.
