Bhutan is a sovereign country at the crossroads of East Asia and South Asia, located towards the eastern extreme of the Himalayas mountain range. It is fairly evenly sandwiched between the sovereign territory of two nations: first, the People's Republic of China (PRC) on the north and northwest. There are approximately 477 kilometres of border with the country's Tibet Autonomous Region (TAR), or simply Tibet. The second nation is the Republic of India on the south, southwest, and east; there are approximately 659 kilometres with the states of Arunachal Pradesh, Assam, West Bengal, and Sikkim, in clockwise order from the kingdom. Bhutan's total borders amount to approximately 1,139 kilometres. The Republic of Nepal to the west, the India to the south, and the Union of Myanmar to the southeast are other close neighbours; the former two are separated by only very small stretches of Indian territory.
Tawang is a town and administrative headquarter of Tawang district in the Indian state of Arunachal Pradesh. It lies on NH-13 section of Trans-Arunachal Highway. The town was once the capital of the Tawang Tract, which is now divided into the Tawang district and the West Kameng district. Tawang continues as the headquarters of the former. Tawang is the number one tourist destination of Arunachal Pradesh.
Mo Chhu is a major river in Bhutan. The word "Chhu" means "river" or "water" in Dzongkha, the official national language in Bhutan. The river rises in Gasa Dzongkhag (district) near the border between Bhutan and Tibet. From there, the Mo Chhu flows generally southward to Punakha in central Bhutan, where it joins the Pho Chhu from the northeast. The confluence of the two streams is immediately below the Punakha Dzong, which is the winter home of the Dratshang Lhentshog and the Je Khenpo. The combined streams are then joined by the Dang Chhu near the town of Wangdue Phodrang, and the name of the river becomes the Puna Tsang Chhu. The river then flows through Dagana and Tsirang Districts. After leaving Bhutan near the town of Lhamoidzingkha, formerly known as Kalikhola, the river enters Assam in India and is known as the Sankosh. The Sankosh ultimately empties into the Brahmaputra, flowing into the Bay of Bengal.
Sankosh is a river that rises in northern Bhutan and empties into the Brahmaputra in the state of Assam in India. In Bhutan, it is known as the Puna Tsang Chu below the confluences of several tributaries near the town of Wangdue Phodrang.
The Lohit River, which name came from the Assamese word Lohit meaning blood, also known as the Zayul Chu by the Tibetans and Tellu by the Mishmis, is a river in China and India, which joins the Brahmaputra River in the state of Assam. It is formed in the Zayul County of the Tibet Autonomous Region, through a merger of two rivers: the Kangri Karpo Chu, which originates in the Kangri Karpo range, and Zayul Chu, which originates to its northeast. The two rivers merge below the town of Rima. The combined river descends through this mountainous region and surges through Arunachal Pradesh in India for 200 kilometres (120 mi) before entering the plains of Assam where it is known as the Lohit River. Tempestuous and turbulent, and known as the river of blood partly attributable to the lateritic soil, it flows through the Mishmi Hills, to meet the Siang (Brahmaputra) at the head of the Brahmaputra valley.
The Torsa River rises from the Chumbi Valley in Tibet, China, where it is known as Machu. Its course continues into Bhutan, India, and Bangladesh before joining the Brahmaputra River into the Bay of Bengal.
The Manas River, known in Bhutan as the Drangme Chhu, is a transboundary river in the Himalayan foothills between southern Bhutan, India, and China. It is the largest of Bhutan's four major river systems, with the other three being the Amo Chu or Torsa River, the Wang Chu or Raidak, and the Puna Tshang Chu or Sankosh. It is met by three other major streams before it again debouches into India in western Assam. The river flows for a total length of 400 kilometres (250 mi), including through Tibet for 24 km (15 mi), Bhutan for 272 kilometres (169 mi), and Assam for 104 kilometres (65 mi) before it joins the mighty Brahmaputra River at Jogighopa. A major tributary of the Manas, the Aie River, joins it in Assam at Bangpari.
The Kuri Chhu, also known as the Lhozhag Xung Qu or Norbu Lag Qu, is a major river of eastern Bhutan, that has formed a scenic valley with high peaks and steep hills. Kuri Chhu is a tributary of the Manas River system, which is the largest river of Bhutan and a major tributary of the Brahmaputra River that drains most of eastern Bhutan.
The Takpa or Dakpa language, Dakpakha, known in India as Tawang Monpa, also known as Brami in Bhutan, is an East Bodish language spoken in the Tawang district of Arunachal Pradesh, and in northern Trashigang District in eastern Bhutan, mainly in Kyaleng, Phongmed Gewog, Dangpholeng and Lengkhar near Radi Gewog. Van Driem (2001) describes Takpa as the most divergent of Bhutan's East Bodish languages, though it shares many similarities with Bumthang. SIL reports that Takpa may be a dialect of the Brokpa language and that it been influenced by the Dzala language whereas Brokpa has not.
The Subansiri River is a trans-Himalayan river and a tributary of the Brahmaputra River that flows through Tibet's Lhuntse County in the Shannan Prefecture, and the Indian states of Arunachal Pradesh and Assam. The Subansiri is 442 kilometres (275 mi) long, with a drainage basin 32,640 square kilometres (12,600 sq mi). It is the largest tributary of the Brahmaputra contributing 7.92% of the Brahmaputra's total flow.
The Bhutan–India border is the open international border separating the Kingdom of Bhutan from the Republic of India. The border is 699 km long, and adjoins the Indian states of Assam, Arunachal Pradesh, West Bengal, and Sikkim.
Milakatong La or Menlakathong La is a historic mountain pass along the trade route between Tawang in India's Arunachal Pradesh and Tsona Dzong in Tibet's Shannan province via the valley of Tsona Chu.
Sumdorong Chu is a tributary of the Nyamjang Chu river that flows along the disputed Sino-Indian border between the Tsona County of Tibet and the Tawang district of Arunachal Pradesh. It originates in the Tokpo Shiri Glacier, about 7–10 kilometres east of Nyamjang Chu, and flows down to the river. Its junction with Nyamjang Chu is to the north of that of Namka Chu, another contested river valley, by about two kilometers.
Namka Chu or Kejielang River is a tributary of Nyamjang Chu that flows along the disputed border between India and China. The Indian side of the border is the Tawang district in Arunachal Pradesh. The Tibetan side of the border is in Tsona Dzong, Shannan province of Tibet. Namka Chu originates near the trijunction of Tibet, Bhutan and India and flows east for 26 km before joining Nyamjang Chu. It is about 200 kilometers away from the Misamari railhead and 60 kilometers from the Tawang road head. The Namka Chu valley was the scene of some of the most fierce fighting between India and China during the 1962 Sino-Indian war.
Nyamjang Chu, or Nyashang Chu (Tibetan: ཉ་བཤང་ཆུ, Wylie: nya bshang chu, THL: nya shang chu) is a cross-border perennial river that originates in the Shannan Prefecture of Tibet and flows into the Arunachal Pradesh state of India, joining the Tawang Chu river just before it enters Bhutan. The Nyamjang Chu valley has provided the traditional communication route between Tawang and Tibet. The valley near town of Zemithang in the Tawang district, called the Pangchen Valley, is known for its serene beauty and forms one of the wintering locations for the black-necked crane.
Chumi Gyatse Falls, called Domtsang and Dongzhang waterfalls in Tibetan and Chinese languages respectively, are a collection of waterfalls in the Tawang district in Arunachal Pradesh, India, close to the border with the Tibet region of China. According to the local Buddhist tradition, the 108 holly water falls which originate from in-between the mountains symbolise the blessings of Guru Padmasambhava. The Chumi Gyatse Falls are close to the Line of Actual Control, the de facto border between China and India, just 250 metres away according to one account.
Tulung La (Tibetan: ཐུ་ལུང་ལ་, Wylie: thu lung la) is a border pass between the Tsona County in the Tibet region of China and India's Tawang district in Arunachal Pradesh. It is in the eastern part of the two districts, close to the Gori Chen cluster of mountains, on a watershed between the Tsona Chu river in Tibet and the Tawang Chu in the Tawang district. The watershed ridge forms the border between Tibet and India as per the McMahon Line. Tulung La provided an invasion route to China during the 1962 Sino-Indian War. It is also the scene of occasional clashes between the two sides.
