With gullies, ravines and steep mountainsides, the unique landscape was shaped as a result of gradual geological movements of the Himalayan region ever since the Quaternary Period from 2.5 million years ago and the impact of perennial water erosion and　　airslaking.
In pics: landscape of earth forest in China s Tibet - People s Daily Online
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In pics: landscape of earth forest in China s Tibet-Xinhua
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