Silent Valley Tours General Information about Silent ValleyArea : 90 sq.kmTemperature range : 39 C- 20.4 CBest time to visit : September to March. Silent Valley National Park located 40 kms from Mannarkkad in the Palakkad district, echoes with the sounds of teeming wildlife. 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. Thanks largely to its difficult terrain and remoteness, the extent of degradation is minimal in comparison with other sanctuaries. How to reach Nearest airport is at Coimbatore, 55 kms.The nearest railway station is Palakkad, 75 kms.40 Kms From Mannarkkad, Kerala. Prime Attractions of Silent Valley The park has a huge variety of wildlife, with over a 100 species of Butterflies and 400 species of Moths and other animals like the Ceylon Frog Moth, Great Indian Hornbill, the Nilgiri Laughing Thrush and the Lion-Tailed Macaque. The park has around 26 species of mammals and 120 species of avifauna, many of them considered endangered. Apart from these, there are 11 species of snakes, 19 species of amphibians, and nine species of Lizards in the park.
There is a huge wild tree of Kattualying variety. It is hollow within and can hide at least 12 people in it.

Silent Valley National Park (Core zone: 89.52 square kilometres (35 sq mi)) is located in the Nilgiri Hills, Palakkad district, Kerala, in South India. The area under this national park was historically explored in 1847 by the botanist Robert Wight,[1] and is associated with Hindu legend.
The park is one of the last undisturbed tracts of South Western Ghats montane rain forests and tropical moist evergreen forest in India. Contiguous with the proposed Karimpuzha National Park (225 km²) to the north and Mukurthi National Park (78.46 km²) to the north-east, it is the core of the Nilgiri International Biosphere Reserve (1,455.4 km²), and is part of The Western Ghats World Heritage Site, Nilgiri Sub-Cluster (6,000+ km²) under consideration by UNESCO.
Plans for a hydroelectric project that threatened the parks high diversity of wildlife stimulated an environmentalist Social Movement in the 1970s called Save Silent Valley which resulted in cancellation of the project and creation of the park in 1980. The visitors' centre for the park is at Sairandhri.

Silent Valley National Park (Core zone: 89.52 square kilometres (35 sq mi)) is located in the Nilgiri Hills, Palakkad district, Kerala, in South India. The area under this national park was historically explored in 1847 by the botanist Robert Wight,[1] and is associated with Hindu legend.
The park is one of the last undisturbed tracts of South Western Ghats montane rain forests and tropical moist evergreen forest in India. Contiguous with the proposed Karimpuzha National Park (225 km²) to the north and Mukurthi National Park (78.46 km²) to the north-east, it is the core of the Nilgiri International Biosphere Reserve (1,455.4 km²), and is part of The Western Ghats World Heritage Site, Nilgiri Sub-Cluster (6,000+ km²) under consideration by UNESCO.
Plans for a hydroelectric project that threatened the parks high diversity of wildlife stimulated an environmentalist Social Movement in the 1970s called Save Silent Valley which resulted in cancellation of the project and creation of the park in 1980. The visitors' centre for the park is at Sairandhri.