How the deadly Nepal and Tibet flash flood unfolded – a visual guide
US Geological Survey says massive glacial collapse caused catastrophic flash floods in the Himalayan border region of Nepal â and Tibet At 8.37am on Wednesday, an enormous section â of a glacier in the Himalayas sheared free and crashed on to the valley floor in Nepalâs Langtang national park, about 35 miles (60km) north of the capital, Kathmandu, near the mountainous Nepal-Tibet border. Such was the force of the event, it was initially reported as an earthquake of magnitude 4.4. The US Geological Survey later determined the tremor was caused âby glacial rock and ice collapsing, registering a magnitude of 5.2. The collapse triggered a huge release of water, mud, rock and ice that thundered down valleys and swept down the Lhende Khola, Bhotekoshi and Trishuli rivers. The high-speed flash floods careered towards northern Nepalese towns, including areas popular with mountaineering tourists and pilgrims. Horrifying videos from the Gyirong border post, which connects Nepal and Tibet, showed people running for their lives as the wall of debris obliterated buildings and swept away lines of buses. In Nepal, houses and roads â were washed away in seconds. âIt was a huge gush of mud
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