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Borasu Pass

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7 Days 6 Nights

Tour Type

Daily Tour

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Borasu pass is one of the many passes that cross into Himachal from Uttarakhand. It connects the Tons river valley with Baspa river valley. It is a high but practical traverse into the great Kinnaur Valley and takes 3 to 4 days from Har Ki Dun forest rest house to Chitkul road head in the Baspa Valley. From Har ki Dun the trail heads North along the Marinda Gad(river). Beyond that the ascent eases and the path winds up for about 5 km through a flower strewn narrow valley. With a glacier further right, we climb strenuously, for about 4 km to the pass. Then we descend the rocky slopes and down to the Baspa bed. From the camping ground here, the trek to Chitkul is very easy. This trek is one of the best ways to experience the Himalayan cultures of Garhwal and Kinnaur.

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Dehradun to Sankri drive

We start early from Dehradun and reach the village Sankri by evening. The final stretch is through the Govind Pashu National Park after we cross a check post at Netwar. We rest at night in a guest house or in camps.

Sankri (1,920 m) to Seema (2,560 m) via Taluka (1,800 m)

Post breakfast we are transported from Sankri to Taluka. The drive is a bit bumpy. The trek commences from Taluka on a stony path. With the river Supin gushing through rapids beside us, under the shade of walnut, pine and other trees, the walk is quite pleasant. Often the passing villagers greet us on the way.

The path crosses over a few streams which merge with Supin. After a few hours of walk the village of Gangad can be seen towards the left, across the river. We continue our hike and after about an hour's walk, the quaint village of Osla unfolds itself. Seema is a tiny settlement opposite to the river from Osla. We set camp here or stay in a hut with a local family in the village.

Seema/Osla to Har ki Dun (3,510 m)

From Osla the trail gradually rises higher and passes through bushes of flowers like orchids, fleece flowers and sunflowers. The ascending path climbs high above the confluence of Supin river and the river from Ruinsara valley.

After traversing higher up along the left side of the river, we camp at a very panoramic spot in Har ki Dun, located at the junction of two valleys - one originating from Jaundhar glacier and the other from beyond Hata glacier.

Har ki Dun to Ratha Tho (4,200 m)

Today we trek at moderate pace to reach Ratha Tho. On the wasy, we pass by Morinda Tal, a small lake. A part of the trek is a bit over boulders but with the views of snow covered peaks and wide valleys, it is a beautiful walk.

Ratha Tho to Borasu pass base camp (Upper Lamjung) (4,900 m)

On this day, we walk higher up. The path is over boulders and quite often snow covered. The campsite at upper Lamjung is also on snow mostly. From here one gets a beautiful view of the valley behind.

Borasu pass base camp (Upper Lamjung) to Bonga (4,000 m) via Borasu pass (5,360 m)

We start before sunrise for this day's trek. As we keep moving higher up, the views open up behind us. After crossing two glaciers and a final ascent over boulders, the cradle shaped Borasu pass lies before us. We descend towards the Himachal side of the pass into a large glacier usually glissading over the initial slope. The trek further is along a tributary of Baspa river. We may find shepherds near the campsite.

Bonga to Chitkul (3,430 m)

Today's trek takes about 8 h. This is an easy walk through flower fields and forests. Overnight in Chitkul Village. The trek ends here. One can get public or private transport from Chitkul or Sangla to Shimla.


  • Transport support from and Dehradun to Taluka: on day 1 and day 2.
  • Guide and cook fees.
  • Rent for camping equipment.
  • Forest entry charges.
  • Porter and mule support to carry camping equipment. Please note that personal luggage can be carried by mules and/or porters on chargeable basis.
  • All veg meals starting from day 1 dinner to day 7 lunch.
  • Tented accommodation throughout the trek. Possible guest house accommodation on Day 1.
  • Transport to reach Dehradun from hometown.
  • Personal expenses like tips, personal medicines, phone calls etc.
  • Any transport support during the trek apart from what is included above.
  • Accommodation in Dehradun and in Chitkul.
  • Personal luggage with mass not exceeding 12 kg per bag per person can be carried by porters/mules @ Rs 300 per day per bag.


7 Days 6 Nights

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from Rs.26999

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