Silent Valley National Park

The core of the Nilgiri Biosphere Reserve, the Silent Valley National Park is probably one of the most magnificent gifts of nature to mankind, a unique preserve of tropical rain forests in all its pristine glory with an almost unbroken ecological history. Silent Valley is closed on all sides with high and continuous ridges and steep escarpments, as a result the valley is shielded from the extremes of climate as well as anthropogenic interventions and so it remained an ecological island with a special micro climate. The river Kunthi descends from the Nilgiri Hills above an altitude of 2000 m and traverses the entire length of the valley finally rushing down to the plains through a deep gorge.
Source : forest.kerala.gov.in 

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