Yamunotri is the source of the Yamuna River and the seat of the Goddess Yamuna in Hinduism. It is situated at an altitude of 3,293 metres (10,804 ft) in the Garhwal Himalayas and located approximately 30 kilometers (19 mi) North of Uttarkashi, the headquarters of the Uttarkashi district in the Garhwal Division of Uttarakhand, India. It is one of the four sites in India’s Chhota Char Dham pilgrimage. The sacred shrine of Yamunotri, source of the river Yamuna, is the westernmost shrine in the Garhwal Himalayas, perched atop a flank of Bandar Poonch Parvat. The chief attraction at Yamunotri is the temple devoted to the Goddess Yamuna and the holy thermal springs at Janki Chatti (7 km. Away).
The actual source, a frozen lake of ice and glacier (Champasar Glacier) located on the Kalind Mountain at a height of 4,421 m above sea level, about 1 km further up, is not frequented generally as it is not accessible; hence the shrine has been located on the foot of the hill. The approach is extremely difficult and pilgrims therefore offer puja at the temple itself.
The temple of Yamuna, on the left bank of the Yamuna, was constructed by Maharaja Pratap Shah of Tehri Garhwal. The deity is made of black marble. The Yamuna, like the Ganges, has been elavated to the status of a divine mother for the Hindus and has been held responsible for nurturing and developing the Indian civilization.
Close to the temple are hot water springs gushing out from the mountain cavities. Surya Kund is the most important kund. Near the Surya Kund there is a shila called Divya Shila, which is worshipped before puja is offered to the deity. Devotees prepare rice and potatoes, tied in muslin cloth, to offer at the shrine by dipping them in these hot water springs. Rice so cooked is taken back home as prasadam. The pujaris of Yamunotri come from the village of Kharsali near Janki Chatti. They are the administrators of the sacred place and perform religious rites. They are well-versed in the Shastras.
According to the legend ancient, sage Asit Muni had his hermitage here. All his life, he bathed daily both in the Ganges and the Yamuna. Unable to go to Gangotri during his old age, a stream of the Ganges appeared opposite Yamunotri for him.
The temple and the place opens every year on the auspicious day of the Akshaya Tritya, which generally falls during the last week of April, or the first week of May. The temple always closes on the sacred day of Diwali in mid-October – first week of November, with a brief ceremony. The temple staff return to their villages and for the rest of the time the valley is gripped in no-man silence and covered with a white sheet of snow. With the melting of the snow next summer, the temple re-opens to the blissful happiness of thousands of visitors again.
The daughter of the Sun god, Surya and consciousness, Sangya the birth place of the Yamuna is the Champasar Glacier (4,421 m) just below the Banderpoonch Mountain. The mountain adjacent to the river source is dedicated to her father, and is called Kalind Parvat, Kalind being another name of Surya. Yamuna is known for her frivolousness, a trait that she developed because, according to a common story, Yamuna’s mother could never make eye contact with her dazzling husband.
Yamunotri temple is situated in the western region of Garhwal Himalayas at an altitude of 3,235 metres (10,614 ft) in Uttarkashi district, Uttarakhand. The temple is dedicated to Goddess Yamuna. The Yamunotri temple is a full day’s journey from Uttarakhand’s main towns — Rishikesh, Haridwar or Dehradun. The actual temple is only accessible by a 13 kilometres (8.1 mi) trek from the town of Hanuman Chatti and a 6 kilometres (3.7 mi) walk from Janki Chatti; horses or palanquins are available for rent. The hike from Hanuman Chatti to Yamunotri is very picturesque with beautiful views of a number of waterfalls. There are two trekking routes from Hanuman Chatti to Yamunotri, the one along the right bank proceeds via the Markandeya Tirth, where the sage Markandeya wrote the Markandeya Purana, the other route which lies on the left bank of the river goes via Kharsali, from where Yamunotri is a five or six hours climb away.
The original temple was built by Maharani Guleria of Jaipur in the 19th century. The current temple is of recent origin as earlier constructions have been destroyed by weather and the elements. There seems to be a confusion as to who built the temple of Yamunotri. However according to sources, the temple was originally constructed by Maharaja Pratap Shah of Tehri Garhwal.
It is located at an altitude of 3,235 metres (10,614 ft) approximately. A little ahead is the actual source of the river Yamuna which is at an altitude of about 4,421 metres (14,505 ft) approximately. Two hot springs are also present at Yamunotri offering relief to tired hikers at a height of 3,292 metres (10,801 ft), Surya Kund, has boiling hot water, while Gauri Kund, had tepid water suitable for bathing  The temple opens on Akshaya Tritiya(May) and closes on Yama Dwitiya (the second day after Diwali, November). Lodging at the temple itself is limited to a few small ashrams and guest-houses. Ritual duties such as the making and distribution of prasad (sanctified offerings) and the supervision of pujas (ritual venerations) are performed by the Uniyal family of pujaris (priests). Unique aspects of ritual practice at the site include hot springs where raw rice is cooked and made into prasad.
Rishikesh to Yamunotri 222 km via Narendranagar 16 km, Chamba 46 km, Brahmkhal 15 km, Barkot 40 km, Sayanachatti 27 km, Hanumanchatti 6 km, Phoolchatti 5 km, Jankichatti 3 km and Yamunotri 6 km.