Related by context. All words. (Click for frequent words.) 70 Tibetan Plateau 66 Himalayas 63 Qinghai Tibet Plateau 63 Kunlun Mountains 62 Tibet 58 Himalayan Mountains 58 Qinghai Tibetan Plateau 58 Qinghai Tibet plateau 58 Tsangpo 58 Himalayan region 57 Himalaya Mountains 57 Yunnan Guizhou Plateau 57 Tibetan 56 Tianshan Mountains 55 Qinling Mountains 55 Lhasa 55 Tianshan mountains 55 Tibetan Autonomous Region 55 Tibetans 55 Qinghai province 54 Hexi Corridor 54 Xinjiang province 54 Changthang 54 Qinghai Tibetan plateau 53 Taklamakan Desert 53 Yangtze River 53 Yarlung Zangbo River 53 Qinghai Tibet railway 53 Tibet Autonomous Region 53 Tibetan monastery 53 Qinghai Tibet 53 Karakoram 53 Hoh Xil 53 Qomolangma 52 Himalaya mountains 52 Himalayan plateau 52 Qinghai Plateau 52 Gansu Sichuan 51 Xinjiang Uighur Autonomous Region 51 Nujiang River 51 Yangtze 51 Xinjiang 51 Tibetan highlands 51 Tibetan nomads 51 Kunlun Mountain 51 Himalayan 51 Himalayan mountains 51 Sichuan province 51 Himalayan peaks 51 Khumbu glacier 51 Mount Qomolangma 51 Ladakh 51 Loess Plateau 50 Nagqu 50 Karakoram ranges 50 Tibetan exiles 50 Tibetan Buddhist monastery 50 Huaihe River 50 Arunachal Pradesh 50 Yangtze River basin 50 Himalayan glacier 50 Himalayan foothills 50 Yarlung Zangbo 50 Pamir mountains 50 Pamir Mountains 50 Labrang Monastery 50 Tibetan uprising 50 Gansu 50 Huaihe 50 Ladakh region 50 Sichuan Gansu 50 Tarim Basin 50 neighboring Qinghai province 50 mighty Yangtze River 50 Tibet Qinghai 49 Amdo 49 Karakoram range 49 Uyghur separatists 49 Taklimakan Desert 49 Tibetan monasteries 49 Taklamakan desert 49 Sichuan 49 Lancang River 49 Yangtze river 49 Qinghai Province 49 Tanggula Pass 49 Gobi desert 49 trans Himalayan 49 Himalayan kingdom 49 Arunachal Pradesh bordering 49 Samye Monastery 49 exiled Tibetans 49 Yarlung Tsangpo 48 Tibetan refugees 48 Tsangpo River 48 Poyang Lake 48 Nagqu Prefecture 48 Xishuangbanna 48 Gobi Desert 48 Qinghai Tibet Railway 48 Kekexili 48 Karmapa Lama 48 Mongolian steppe 48 Nepalese Himalayas 48 Salween 48 Ganzi Prefecture 48 Karakoram Range 48 Parechu 48 Qinghai 48 Qilian Mountain 48 northwestern Qinghai Province 48 Tibetan antelopes 48 Inner Mongolia 48 Altai Mountains 48 Jinsha River 48 Yunan Province 48 mountainous Yunnan province 48 Mount Everest 48 Tibetan Autonomous Region TAR 48 Yunnan 48 glacier melt 48 black necked cranes 48 glacial melt 48 Gansu province 48 Sanjiangyuan 48 Dhauladhar range 48 Tibet Autonomous Region TAR 48 Yangtze basin 48 Tengboche 48 Lhasa Tibet 48 Xinjiang Province 47 Gangotri glacier 47 Ngari Prefecture 47 endangered Tibetan antelopes 47 Pamirs 47 Shivaliks 47 Sinkiang 47 Dianchi Lake 47 Gyegu 47 Tiger Leaping Gorge 47 Zhouqu county 47 Nangpa Pass 47 Puncog 47 Himalayan highlands 47 Nujiang 47 Tangshan earthquake 47 McLeod Ganj 47 Tibetan Buddhist monasteries 47 Inner Mongolia autonomous 47 Tanggula 47 Pareechu 47 Xinjiang Inner Mongolia 47 Tien Shan mountains 47 Shigatse 47 Buddhist kingdom 47 Mount Emei 47 Greater Hinggan Mountains 47 Ferghana valley 47 Tianshan Mountain 47 Pareechu river 47 Arunachal 47 Himalayan territory 47 Yarkand 47 unclimbed peaks 47 Gansu Province 47 Dharamsala 47 Dunhuang 47 Jiuzhaigou 47 Sichuan Shaanxi 46 Qamdo 46 Gangotri Glacier 46 Potala palace 46 Tarim River 46 icecap 46 Lhakpa Ri 46 Tibetan inhabited 46 Dhauladhar 46 northwestern Xinjiang 46 crustal movements 46 Tibetan autonomy 46 Gangetic plains 46 Three Gorges Dam 46 Khumbu region 46 Gyantse 46 Karakoram mountain 46 Xiangjiang River 46 restore feudal theocracy 46 Three Gorges Reservoir 46 Qaidam Basin 46 Three Gorges reservoir 46 divide Qinghai province 46 Khumbu Glacier 46 Kumbum Monastery 46 densely forested mountains 46 Deccan plateau 46 Pir Panjal range 46 Qamdo Prefecture 46 Amur River 46 Danjiangkou Reservoir 46 Xigaze 46 Rongwo 46 glacier 46 Himalayan homeland 46 Yunnan Guizhou 46 Tawang monastery 46 Guizhou Province 46 Indonesian archipelago 46 Huai River 46 lamas 46 Guizhou province 46 ethnically Tibetan 46 Xinjiang Uyghur Autonomous Region 46 Minya Konka 46 southwestern Sichuan province 46 Delingha 46 GLOF 46 restive Himalayan 46 Hindu Kush mountains 46 Uttarkashi 46 Mt Qomolangma 46 Yushu 46 Guge Kingdom 46 Siberian Traps 46 administered Kashmir 45 Zhongba county 45 exiled Dalai Lama 45 Taklimakan desert 45 Tibetan diaspora 45 Xigaze prefecture 45 Chishui 45 Xinjiang Gansu 45 Shaolin temple 45 Sichuan Province 45 lamasery 45 Qinghai Sichuan 45 Lop Nur 45 Changbai Mountain 45 karst limestone 45 Xinjiang Uygur Autonomous Region 45 Cordillera Blanca 45 subglacial lakes 45 Haihe River 45 Mount Kailash 45 Zhongba 45 Mekong river 45 Tibetan herders 45 Anhui province 45 medieval backwater 45 Tian'anmen Square 45 Labrang monastery 45 Indo Gangetic plains 45 Tibetan herdsmen 45 Danxia 45 Tibetan independence 45 grasslands 45 Hindu Kush 45 swollen Huai River 45 Sera Monastery 45 devoutly Buddhist 45 Naqu 45 lama 45 restive Xinjiang 45 Xigaze Prefecture 45 Shennongjia 45 Gyuto monastery 45 Nyingchi 45 Hanjiang River 45 Indo Gangetic plain 45 Rongbuk glacier 45 plains 45 lowland plains 45 snowline 45 Buddhist stupas 45 ethnic Mongolians 45 Lijiang 45 Yunnan province 45 northwestern Gansu province 45 Cho Oyo 45 Tien Shan 45 Tien Shan Mountains 45 thangka 45 Qinling 45 Himalayan glaciers 45 Taihang Mountains 44 Drepung Monastery 44 Deccan Plateau 44 Tibetan antelope 44 Namtso 44 Mekong River 44 Gansu provinces 44 western Gansu province 44 Kirti Monastery 44 Huai river 44 Ganden Monastery 44 Xinjing 44 Mount Taishan 44 Siachin Glacier 44 Tawang 44 Maoxian county 44 Kagyu sect 44 Ngari prefecture 44 Nubra valley 44 Tibetan Buddhism 44 Zhouqu 44 Tarim basin 44 Andes Mountains 44 Khilanmarg 44 swollen Huaihe River 44 Yushu Tibetan Autonomous Prefecture 44 Taktser 44 Yuan Dynasty 44 Medog 44 Milarepa 44 Henan Shanxi 44 polar icecap 44 Xianjiang 44 Eurasian continent 44 Transantarctic Mountains 44 Thorthormi 44 Xinjiang Autonomous Region 44 Jiayu Pass 44 southwestern Guizhou Province 44 Qingcheng 44 Sichuan Qinghai 44 Potala Palace 44 Aksai Chin plateau 44 western Qinghai province 44 Siachen Glacier 44 dzong 44 Salang Tunnel 44 glaciers 44 terai 44 Dolpo 44 Khumbu 44 Xiling 44 Rongbuk 44 permafrost 44 Tingri 44 Genghis Khan conquered 44 Nathu La Pass 44 Lohit district 44 Potala 44 Kalapani 44 Jinsha 44 glacial melting 44 Dalai Lama 44 Inner Mongolian 44 Litang 44 yak herders 44 Yunnan Guangxi 44 Indus basin 44 Karakoram mountains 44 Machu Picchu ruins 44 Tibetan Autonomous Prefecture 44 Xinjiang Uygur 44 Jiaohe 44 mesosphere 44 Hindu Kush Himalayan 44 Yushu Prefecture 44 Barkhor 44 Virunga volcanoes 44 Yunnan Province 44 Weihe River 44 Khardungla 44 Sichuan Yunnan 44 Kazak Autonomous Prefecture 44 neighboring Yunnan province 44 Rohtang Pass 44 Annamite Mountains 44 Mount Cho Oyu 44 Wudang Mountains 44 glacier melts 44 Shishapangma 44 Dhauladhar ranges 44 Dalai Lamas 44 Yangtze tributary 44 Khumbu valley 44 Siachen glacier 44 Qinling Mountain 44 Drepung 43 Monlam prayer festival 43 monasteries nunneries 43 Tashilhunpo Monastery 43 Guizhou 43 Tibet Autonomous 43 alpine terrain 43 Han Chinese 43 Lhasa riots 43 Zanskar valley 43 Ramoche Monastery 43 Dunhuang Grottoes 43 Tianjin municipality 43 Yangtse 43 Sela Pass 43 exiled Tibetan 43 southwestern Yunnan 43 Aba prefecture 43 Tangjiashan quake lake 43 Hindu Kush Himalaya 43 Meili Snow 43 Nangpa La 43 China 43 Amu Darya 43 Ganden monastery 43 XUAR 43 Ningxia Hui 43 altiplano 43 Minjiang River 43 Garhwal Himalayas 43 Manchus 43 glacial meltwater 43 Khmer Empire 43 tigers roamed 43 Manchu Dynasty 43 Gansu Qinghai 43 Tanggula Mountain 43 Helheim Glacier 43 Lugu Lake 43 Golmud 43 Nepal 43 Huayin 43 Minqin 43 Dharamshala 43 Qilian 43 desert wastelands 43 Cangnan county 43 Tibetan prefecture 43 steppes 43 Brahmaputra River 43 Himalaya Karakoram 43 Tectonic plates 43 Zangmu 43 autonomous Xinjiang Uyghur 43 Ngaba 43 Gendun Chophel 43 jungle clad escarpment 43 Unmistaken Child 43 Amazon rainforest 43 Patagonian Andes 43 crustal plate 43 Three Gorges 43 towering icebergs 43 Pangong lake 43 Hindukush 43 Han Dynasty 43 Kumbum 43 Omo River 43 Karmapa 43 Yurungkax River 43 Heilong 43 Greenland icecap 43 Sanxingdui 43 Qiantang 43 Huaihe river 43 Khunjerab Pass 43 devout Buddhists 43 Sella Pass 43 inundated vast swathes 43 China Qinghai Province 43 Brahmaputra 43 Inner Mongolia Autonomous Region 43 Tuojiang River 43 river valleys 43 panda habitats 43 Inca Empire 43 Taklimakan 43 Thangka 43 Lhoka 43 Tibetan Buddhists 43 calderas 43 Han dynasty 43 reincarnated Panchen Lama 43 Sutlej river 43 Jinggangshan 43 receding glaciers 43 Melting glaciers 43 Chryse Planitia 43 Kirti monastery 43 Tian Shan 43 Himalayan river basins 42 tibet 42 taiga 42 mountainous regions 42 mantle lithosphere 42 Barkhor Square 42 Wakhan Corridor 42 imperial tombs 42 Shanxi Henan 42 endangered Tibetan antelope 42 cirques 42 Choglamsar village 42 Guizhou Yunnan 42 Three Gorges dam 42 mountainous Sichuan province 42 Jokhang temple 42 Control LAC 42 Karakoram Highway 42 Haihe 42 Burma 42 TCHRD 42 lithosphere 42 northwestern Shaanxi 42 Rumtek 42 Datun 42 Uighur Autonomous Region 42 Eastern Ghats 42 polar plateau 42 Karakoram Mountains 42 Golog 42 melting glaciers 42 Ningxia Inner Mongolia 42 valley 42 subalpine meadows 42 Baluchistan 42 Kashmir valley 42 Tibetan exile 42 Xia Dynasty 42 lying deltas 42 Lava flows 42 Yushu Qinghai province 42 Mao Zedong Communist 42 Jakobshavn 42 Magway Division 42 mighty Mekong 42 terraced hills 42 Kathmandu 42 chiru 42 Bohai Sea 42 Maqu 42 evergreen forests 42 Jokhang Monastery 42 Rongbuk Glacier 42 Dongting Lake 42 Myanmar Bangladesh Bhutan 42 Karma Kagyu sect 42 northwestern Qinghai province 42 Labrang 42 southwestern Sichuan Province 42 Mogao Grottoes 42 Simikot 42 Maoxian 42 Yao'an county 42 Yangtze Yellow 42 Melvyn Goldstein 42 cave shrine 42 Xiahe 42 monks 42 Rapti River 42 Shannan Prefecture 42 Manchu dynasty 42 Xingjian 42 Andes 42 Fengjie 42 Yunan province 42 hilltop temple 42 Amazon basin 42 Bhutan 42 Xuanzang 42 Gaumukh 42 Jinpa 42 Himalayan kingdoms 42 Arctic icecap 42 Shiveluch 42 Myanmar Irrawaddy delta 42 southwest Yunnan province 42 northwestern Gansu Province 42 massifs 42 predominantly Buddhist 42 Terai 42 southern supercontinent 42 Zhaxi Lamasery 42 tall ponderosa pines 42 Mongolian grasslands 42 Chamdo 42 glaciers melt 42 Nubra Valley 42 Tonle Sap 42 Rebkong 42 Linzhi 42 Shaolin monastery 42 unlogged forests 42 Gyalwa Karmapa 42 Bolivian Andes 42 Tenzin Deleg 42 torrential monsoon downpours 42 Guizhou Sichuan 42 shrinking Aral Sea 42 Tiananmen Square 42 Vastitas Borealis 42 Shaanxi Shanxi 42 Qinhuai River 42 Qinghai Gansu 42 Emeishan 42 Jiayuguan 42 Tibetan lama 42 western Xinjiang 42 Maoist stronghold 42 Thaye Dorje 42 Thar desert 42 Tibetan Buddhist monk 42 Mansarovar lake 42 Diqing Tibetan Autonomous Prefecture 42 eskers 42 heavily fortified frontier 42 Mount Shisha Pangma 42 Sumdorong Chu valley 42 Tumen rivers 42 scenic Himalayan 42 Tibet Autonomous Regional 42 Dorje 41 Pir Panjal 41 Ganges Brahmaputra 41 Monpa 41 Yangzi River 41 ecological degradation 41 Wutai Mountain 41 Maoist insurgency 41 Drepung monastery 41 Lantau Island 41 Khumbu Icefall 41 Changping District 41 alpine glaciers 41 Qinghai provinces 41 Mongol empire 41 Qiang Autonomous Prefecture 41 Danba 41 Rangoon Mandalay 41 Tibetan lamas 41 Yu Jianrong 41 Trikuta hills 41 Mukden Incident 41 Ambassador Fu Ying 41 Choglamsar 41 Senkaku Islands 41 glacier melting 41 Quaternary Period 41 Ethiopian highlands 41 Himalaya 41 Tsering 41 Changbai 41 Brahmaputra river 41 Xilin Gol 41 Xinjian 41 panda habitat 41 molten rocks 41 Junggar Basin 41 Mount Paekdu 41 Yuan Dynasty #-# 41 Tianchi Lake 41 Xinjiang Uygur autonomous 41 Amarnath cave 41 Beijiang 41 glacier shrinkage 41 Kagyu lineage 41 Ogyen 41 Indo Aryans 41 Tawang Buddhist monastery 41 Yushu prefecture 41 Mount Semeru 41 highlands 41 Lahaul valley 41 Gyuto Monastery 41 glaciers retreated 41 Snow leopards 41 Peruvian Andes 41 deep gorges 41 Nyalam 41 Indo Nepal 41 Uighurs resent 41 Zhaxi 41 glaciated 41 Sichuan Yunnan Gansu 41 Xiaowan 41 Mount Baekdu 41 mountain torrents 41 Buddhist monks 41 Sikkim 41 Namche Bazaar 41 interstellar distances 41 vast steppes 41 Lukla airport 41 asthenosphere 41 Liaohe River 41 glacial lakes 41 Shandong Peninsula 41 Jinghong 41 Hunan province 41 Marco Polo Bridge 41 retreating glaciers 41 unwelcome snub 41 Urumqi 41 steppe 41 Dixville Notch nestled 41 Tenzin Zopa 41 grassy plains 41 Pennines 41 Pir Panjal Range 41 Tawang Monastery 41 bamboo forests 41 Imja 41 nomadic herdsmen 41 Helan Mountain 41 Mogao Caves 41 Lutsang monastery 41 Ganges delta 41 subalpine 41 Tsering monk 41 Bitterroots 41 Burma Irrawaddy delta 41 equatorial Pacific Ocean 41 Andreas Schild 41 Zhejiang Anhui 41 Yan'an 41 Kodari 41 Solukhumbu 41 Indus river 41 thawing permafrost 41 Erhai Lake 41 Shaanxi Gansu 41 Rumtek Monastery 41 Mongolia 41 Tezu 41 Pingwu county 41 Tibetology 41 geological disasters 41 feudal serfdom 41 Hebei province 41 forested foothills 41 Subansiri 41 Zipingpu 41 Kameng 41 Brahamaputra 41 Himalayan foothills spruced 41 Severe droughts 41 Kathmandu valley 41 Myanmar Kachin 41 Erlian Basin 41 Norte Chico 41 southwestern Sichuan 41 neighboring Hebei province 41 Bainqen Erdini Qoigyijabu 41 Gyatso 41 Tibetan spiritual leader 41 Anhui Henan 41 Goat Rocks 41 Taiwan Strait 41 Tibet Autonomous Prefecture 41 Gannan Tibetan Autonomous Prefecture 41 China Jiangxi Province 41 southwestern Yunnan Province 41 Guangxi Hunan 41 Zanskar 41 Lancang 41 tribal belt 41 Tengger 41 Guizhou provinces 41 Myanmar 41 Amur river 41 Tengchong 41 glacial shrinkage 41 Genqiu 41 Nisqually Glacier 41 Minjiang 41 Tantric Buddhism 41 Scanty rainfall 41 southwest Sichuan province 41 Yangtze River Basin 41 Zipingpu dam 41 Tenzin Delek Rinpoche 41 basaltic rocks 41 Dalai Clique 41 lowlands 41 alluvial plain 41 Songhua River 41 Ladakhis 41 Pangong Lake 41 Nagchu 41 Ganzi prefecture 41 mountain meadows 41 Zhang Qian 41 Sera monastery 41 Monpa tribe 41 southern Hauran Plain 41 unpopulated terrain 41 Qinling mountains 41 Kashgar 40 Hsiaolin 40 Tibets 40 Wakhan corridor 40 Mahakali River 40 Kangra valley 40 Nepal Terai 40 river Brahmaputra 40 Saltoro Ridge 40 Lhotshampas 40 West Kameng 40 Buddha attained enlightenment 40 Taiwan Straits 40 Kosi river 40 Mcleodganj 40 Tehri dam 40 Dalia Lama 40 tribals 40 Nepal Terai plains 40 volcano lava dome 40 governor Qiangba Puncog 40 Inner Mongolian Autonomous Region 40 glaciers melted 40 Brahmaputra rivers 40 Indian subcontinent 40 mountaineous 40 climatic variations 40 Ming Tombs 40 northwest Gansu province 40 shrinking glaciers 40 Nangpa La Pass 40 Continental Divide 40 Beijiang River 40 troposphere 40 Daguan 40 Shihezi 40 melting Himalayan glaciers 40 central Henan province 40 Tibetan Buddhist tradition 40 Yangtze rivers 40 Yi Che 40 Ladakhi 40 Steep slopes 40 self proclaimed Tibetan 40 Jiangxi Province 40 Yangtze delta 40 Chishui River 40 Guangxi Zhuang autonomous 40 Eurasian landmass 40 Khumbu icefall 40 typhoon Bilis 40 Sino Tibetan 40 Qin Dynasty 40 Tiwanaku civilization 40 Mongolians 40 Lake Taihu 40 Kunlun mountains 40 Mount Annapurna 40 Qing Dynasty #-# 40 Arctic tundra 40 Ramoche Temple 40 glacial lake 40 Antarctica 40 Indian Occupied Kashmir 40 Bering Land 40 Chongqing Yunnan 40 Karakoram highway 40 Wulingyuan 40 Kardze 40 Pir Panjal ranges 40 disputed Himalayan region 40 head Champa Phunstok 40 Ghats 40 Weng'an 40 tibetan 40 neighboring Hebei Province 40 Tumen river 40 Bumthang 40 Liaoning Jilin 40 Gomukh 40 Zojila 40 Sakyamuni 40 stupas 40 feudal theocracy 40 KOLD News #China 40 Songhua 40 Snake River Plain 40 Patna Jehanabad 40 colliding tectonic plates 40 breakneck industrialization 40 Puu Oo 40 mountainous 40 Khumbu Valley 40 Thupten Ngodup 40 Nyiragongo 40 Korean peninsula 40 Miyun 40 Bijie 40 Ming dynasty 40 Kokang 40 neighboring Gansu province 40 Mekong basin 40 Songshan Mountain 40 unclimbed peak 40 Terracotta Warriors 40 Trishuli 40 Jarawa tribe 40 Khechog 40 Genyen 40 Wolong Nature Reserve 40 Mughal empire 40 Mekong 40 VV Vyas top 40 glacial retreat 40 Dzong 40 Boudhanath 40 Tang dynasty 40 Tonle Sap lake 40 Tharsis Rise 40 Hubei provinces 40 semi autonomous tribal 40 Legqog 40 Qinghai Lake 40 Lamasery 40 steep gorges 40 tarai 40 Yangtze Mekong 40 Saharan Desert 40 temperate forests 40 hutong neighborhoods 40 Ganges Indus 40 Beijing 40 Sutong Bridge 40 Xingu river 40 mountain ranges 40 Hindu Kush Mountains 40 Gyaincain Norbu 40 Leh Ladakh 40 Khampa 40 meltwater 40 subtropical regions 40 Tuo River 40 Himalyan 40 Sindhupalchowk 40 Jhelum valleys 40 Lodi Gyaltsen Gyari 40 Shaoshan 40 GhostNet 40 His Holiness Dalai Lama 40 Dingxi 40 Red Sorghum 40 Yunnan Sichuan 40 Exiled Tibetans 40 Polar Regions 40 taiga forest 40 Shaanxi provinces 40 Rongbuk Monastery 40 semi arid Sahel 40 alpine tundra 40 Ussuri 40 Samdrup 40 Neelum River 40 Kashmir 40 Humla 40 Yushu Qinghai Province 40 China restive Xinjiang 40 vast Indonesian archipelago 40 Yamuna river 40 Nathu La 40 mountain slopes 40 Gyalo Thondup 40 Henan province 40 Xiangxi 40 Sun Shihai 40 Dalai Lama Masebe 40 Arniko highway 40 Prof Samdhong Rinpoche 40 deep convective clouds 40 Aksai Chin 40 Narmada valley 40 Sarchu 40 river Ganges 40 Khotan 40 Lankao 40 Phuntsog 40 melting glacial 40 rolling grasslands 40 Lanzhou Military 40 Jokhang Temple 40 Narayanpatna block 40 Yalu River 40 Yuanmingyuan 40 Periyar river 40 Diqing 40 Chittagong Hill Tracts 40 spokesman Thubten Samphel 40 nomadic herders 40 unclimbed mountain 40 arid semi arid 40 Tripura Mizoram 40 Chongqing Municipality 40 Greenland glacier 40 spruce fir forest 40 polar regions 40 Nicholas Bequelin 40 Rongwo monastery 40 Pashmina goats 40 Kelsang Namtso 40 Ming dynasty #-# 40 Khardung La 40 Kumbum monastery 40 East Kameng 40 coastal lowlands 40 Irrawaddy river