Silent valley national park is considered to be one of the most ecologically diverse parks of India. Situated in the western Ghat of India, it covers an area of 236.74 sq km. It is very near to Palakkad district of god's own country Kerala around Nilgiri hills. Historically, the park is explored by the botanist Robert Wight in1847. The silent wildlife sanctuary is entitled as national park in 1986.
The park is regarded as the last pristine region for tropical evergreen forest in India which is rich in biodiversity. The lush green forests, narrow hills, rivers and tropical grasslands make it one the best wildlife destination in India. The fauna of the park also includes many herbs. It is home to more than 1500 species of plants that is why the silent valley national park is paradise for naturalists and biologists. Here you can get a chance to explore many endangered species of plants, known as Sholas in local language.
The Silent valley park gives shelter to many endangered and rare species of mammal such as threatened Lion-tailed Macaque, Niligiri Langur, Malabar Giant Squirrel, Nilgiri Tahr, Peshwa's Bat (Myotis peshwa) and Hairy-winged Bat, elephants, tigers, leopards, wild boar, sambhar, gaur. It is also a major attraction for bird watching which includes more than 16 endangered species of birds for instance Nilgiri Wood-pigeon, Malabar Parakeet, , ], Grey-headed Bulbul, Broad-tailed Grassbird, Rufous Babbler, Wynaad Laughing Thrush, Nilgiri Laughing Thrush, White-bellied Shortwing, Ceylon Frogmouth, Great Indian Hornbill, Long-legged Buzzard, Black-and-orange Flycatcher, Black bulbul etc.
It emerges as a major destination for flower industry where botanists can get a chance to explore more than 1000 species of flower which covers Dicotyledons, Monocotyledons, Orchids, Ipsea, Eria tiagii, Grasses, Legumes , Rubiaceae, Asters ,
cardamom (Ellettaria cardamomum), black pepper (Piper nigrum), yams ( Dioscorea spp.), beans (Phaseolus sp.), a pest-resistant strain of rice Oryza Pittambi, and 110 plant species of importance in Ayurvedic medicine. Seven new plant species have been found from Silent Valley, including in 1996, Impatiens sivarajanii, a new species of Balsaminaceae.