A 200 km drive from Dehradun take us to the quaint town of Sankri. It is advisable to start as early as 6:00 am to warrant enough buffer time to reach Sankri by late evening. The route is picturesque with the Yamuna Valley on one side and the blue Pine forest on the other. Passing through towns such as Mori and Purola we eventually reach Netwar, from where necessary forest permits need to be acquired to enter the Govind National Park. From here follow the course of the Supin river through conifer forest, apple orchards and farming fields to Sankri. With around 200 houses, Sankri is a start point for multiple treks in that region. Most of the people are either trekkers or support staff, gearing up for their respective treks. Famous for the beautiful sunset over the Swargarohini Peak, our evening will be spent exploring this beautiful town, interacting with the locals and acquainting with your fellow trekkers.

Trail from Sankri to Taluka is a leveled trail with 10- 11 mountain bends going through a forest of pine, deodar, bamboo and wild roses. We may have to cross some landslide prone areas as well as drive through a couple of streams en route. Today's trekking from Taluka to Osla alternates between uphills and leveled walks. With some sharp turns and steep climbs, the trail passes through the villages of Datmir, Gangaad and the incomplete cemented structures in Puani Garaat. We finally cross the river and take a steep climb to the village of Osla. Here, we will stay with the locals

Today also, the trek is along the Supin river. First milestone is Debshu Bugyal, from where we will get a magnificent view of Kala Nag or Black Peak. After crossing Debshu Bugyal, we will descend through the forest with loose stones and sandy path to the river. We will cross the Supin river through a bridge. After crossing the bridge, we will again ascend with the Supin river flowing now on our right. There are a couple of tricky sections with slippery path where we might have to take a diversion. Trek along the river until we reach our campsite, which is by the side of the river. Overnight stay in Camps.

This will be our last day when we walk along the Supin river. The condition of the trail deteriorates rapidly from here forth as you trek towards the interiors of the valley. Pass through three mountain bends, after which you’ll pass through a series of landslide zones. After trek of approx 3 hrs, we’ll come across a vast meadow with birch forests forming a background. The Untigad campsite is another 30 minutes’ walk from here. There is a small river-crossing over a tributary of Ruinsara. We pitch our camps at Unti Gad for today. After having hot lunch, head for a small hike to Ruinsara lake. Ruinsara is a lovely lake surrounded by meadows and rhododendron bushes. It is considered sacred by the locals. after spending some time at lake, we head back to our campsite and call it a day.

Today is a short and easy trek of about 4 km. Initially we descend down to Supin river through the dense vegetation. Crossing the river through a bridge, we will then ascend to a small meadow and then head south east along the river. After a trek of 3 kms or so the trail meanders towards south west. Walking for a kilometre from here brings us to our campsite Odari. Odari means a naturally made rock cave. According to folklore, it is believed that Bali (Hanuman's brother) stayed in this cave for one night. The views from the campsite are spectacular. In the North East we will have the crystal clear view of mighty peaks of Swargarohini 1 & 2.

The day starts with a short hike south west to the base camp, but this hike would not be an easy one. We will have to walk on a mountain ridge with a 60 degree incline full of loose stones. This day is critical as we will be camping at a height of 4678 Metre. It is important to keep yourself active & hydrated to avoid chances of getting AMS (Acute Mountain Sickness). The temperature will drop to subzero levels increasing the difficulty many folds. Acclimatisation also takes longer at such heights. Overnight stay in camps

Today we will cross the Bali Pass (4950 m) and reach our next and also the last campsite, Lower Dhamni. We head south east towards the pass. Today's trek will be longer and the most challenging one. We will break camps and start trekking early in the morning at around 6 AM. The trail upto the pass remains full of snow which will require using the techniques learnt earlier. It will take around 2-3 hours to reach the pass from the base camp. Once we reach the pass, enjoy the 360 degree view of peaks such as Swargarohini, Banderpooch, Garhwal ranges and the Yamnotri valley. The most interesting as well as the difficult part of the trek starts after crossing the Bali Pass. We will descend down through a nearly vertical path full of scree and big stones. After crossing this leg, we will come across the goat route. To cross this leg, one needs to be mentally prepared because we will walk on an irregular path which is 6 inches or less wide in some places. After this extremely challenging part, we will rest for a while at a site called Upper Dhamni. After taking rest, we will resume our trek to Lower Dhamni.

This will be our last day of trek. Initial trail is through forest which then merges into a cemented path. The trail is 4.5 km long with mild ascent upto Yamunotri. It will take around 1 hour and 30 minutes to reach Yamunotri. After reaching Yamunotri, you may take a dip in the Sulphur hot water springs of Yamnotri. Bathing in the hot water springs will take away the pain in your legs. From the shrine of Yamunotri we will take the regular pilgrims route to Jaan Ki Chatti which is around 5 km. We start for Dehradun by afternoon and reach by 9pm.