Bali Pass Trek Itinerary (10 Days) Day 1: Sankri to Osla (2,600 m) Drive & trek through pine forests to Osla; camp overnight. Day 2: Osla → Har Ki Dun Base Camp (3,300 m) Moderate trek through alpine meadows; reach Har Ki Dun valley. Day 3: Har Ki Dun Base → Har Ki Dun Summit / Campsite Optional summit hike for acclimatization; camp in the valley. Day 4: Har Ki Dun ... https://www.thinairexpedition.com/bali-pass-trek/