Following a full breakfast, we will be driven to Taluka. The Govind Pashu National Park's motorable road comes to an end here. The trip begins on a gravel route alongside the Supin River, which is pouring with water. Plantations of the red-colored Himalayan crop amaranth, popularly known as cholai, may also be seen. The stroll is as lovely as the locals welcoming us along the route, under the shade of walnut, pine, deodar, and maple trees. We see the settlement of Gangad across the river on the left after a few hours and crossing a few creeks. We continue on our journey and, after about an hour, the charming town of Osla emerges. The name Osla is well-known among hikers. It is home to roughly 200 households and provides insight into Garwahli culture. Seema is a little town on the other side of the river from Osla. We pitch a camp here or stay in a hut with a village family.

Leaving the last of the human villages behind, we continue following the river Supin on the true left side of the valley. Tons, the largest tributary of the Yamuna, is formed when Supin and Rupin combine near Netwar hamlet.

An ascent through deodar trees leads to Devsu Thatch, a lovely meadow. Set against the rising Swargarohini hills is this 1km stretch of lush land. Straight ahead, we can see Kalanag (Black Peak) (6387m). Har Ki Dun Valley may be seen to our left. The confluence of the Har Ki Dun and Ruinsara rivers is located at its bottom. We enter the Ruinsara valley after descending from the meadow. We camp along the creek at the waterfall known locally as Roiltigad or Roiltia at the end of today's hike.

Even at a leisurely pace, today's voyage will take less than 2 hours. We also observe a significant shift in vegetation along the trek. Birch and rhododendron trees take the place of pine and fir trees. The endangered Himalayan brown bear frequents the dense jungle we go through. If we're lucky, we might be able to glimpse this elusive and unusual species.

Ruinsara Tal, beautiful alpine tarn surrounded by thick Rhododendron trees with their distinctive pink bloom in the summers, is one of the trek's highlights. This holy lake in the Himalayas of Uttarakhand will fascinate us. It is one of the Garhwal region's three lakes, the other two being Marinda and Maldaru. We'll be camping near the lake for the night.

We get up early in order to get at our location before the afternoon. We stroll down to the shallow riverbed, over to the opposite bank, and uphill to Thanga, another lovely meadow. The Swargarohini mountains, which seem to be everywhere, may also be seen from this meadow. The Kyarkoti valley is on the left. Odari is not far away. The name 'Odari' refers to a cave rock that has formed organically. This location is related with a mythical narrative. Bali, Hanuman's brother, is said to have stayed here for one night. There's a chance we'll uncover evidence of the rare Himalayan brown bear here as well. We set our camp on a glacier moraine below Bali Pass. With the valley below and the Pass behind us, this is one of the nicest spots for a camp. Temperatures drop to below 0 degrees at night. Camping at this height is a once-in-a-lifetime opportunity that only a few excursions provide.

This day, too, the crossing of Bali Pass begins early. We aim to get at the peak by 8 a.m. The route descends and crosses a hill to the south. The ascent to the Pass is quite short but steep. There will be a lot of glacial scree here. The time it takes to get to the peak varies from 45 minutes to an hour and a half. For the first time, we see the Yamunotri valley after we reach the peak. The panorama is breathtaking. We may see indications of the Saptrishi Kund, which is the Yamuna's source. From the summit of the Pass, we can also see the Banderpunch peaks. Dayara Bugyal, Barua Top, and Dokrani Bamak peaks are also visible. We next cautiously descend down a connecting slope to the higher Dhamni camping areas.

We continue our descent to a woodland path. This road leads to Yamunotri's famed shrine, which is framed by the magnificent Bandarpunch. It is dedicated to Goddess Yamuna and is one of the temples in the Char Dham circuit. We go along the traditional pilgrim trail to Janki Chatti after paying our respects to her black marble statue. We spend the night in one of the local guesthouses. We will have power but no phone service.

This is the last day of our journey, and we'll be returning to Dehradun. We may make the most of this trip by stopping at other well-known destinations along the way, such as the Kempty Falls, Nainbagh, and Mussourie. We had a cherished experience with equally great recollections of an unusual journey and touristic sight-seeing.