Borasu Pass trek is one of the many passes that link Uttarakhand and Himachal Pradesh. The Tons River Valley and the Baspa River Valley are linked by it. From Har Ki Dun forest rest house to Chitkul road head in the Baspa Valley, it is a high but practical traverse into the great Kinnaur Valley that takes 3 to 4 days. The trail heads north from Har ki Dun along with the Marinda Gad (river). The ascent becomes easier after that, and the route winds up for about 5 kilometers through a flower-strewn narrow valley. We climb for about 4 kilometers to the pass, passing by a glacier to our right. Then we make our way down the rocky slopes to the Baspa bed. The trek to Chitkul from the camping ground here is relatively straightforward. The Borasu pass is located at a height of 5,450 meters. As a result, it’s ideal for thrill-seekers!