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[00:01.40]Over 3000 kilometres long, the Himalayas are China's real Great Wall.
[00:13.26]With hundreds of peaks over 7,000 metres and 13 peaks higher than 8,000 metres,
[00:20.25]they are the highest mountains on Earth.
[00:36.78]The Tibetan region contains over 35,000 glaciers that cover over 100000 square kilometres.
[00:48.62]They comprise the largest area of ice outside the polar regions
[00:54.00]and nearly a sixth of the world's total.
[01:00.96]These glaciers are the source of most of the water in the region.
[01:09.19]And the Tibetan plateau is studded with glacial lakes.
[01:13.51]At over 4,500 metres up,Lake Manasarovar in the far west of Tibet
[01:20.25]is the highest freshwater lake in the world.