The Nilgiri Biosphere Reserve is a biosphere reserve in the Nilgiri Mountains of the Western Ghats in South India . It is the largest protected forest area in India, spreading across Tamil Nadu, Karnataka and Kerala. Something went wrong Click here to Refresh The Nilgiri Biosphere Reserve is India's first biosphere reserve, established in 1986. It's located in the Western Ghats, covering two of India's special regions. The Nilgiris, forming a part of the Nilgiris Biosphere Reserve in the Western Ghats is home to moist, dry, evergreen and montane (shola) tropical forests. The Western Ghats, and the Nilgiris in particular, harbour a wealth of flora and fauna; much of which is restricted to the region. e.g. the endangered lion tailed macaque and the Nilgiri tahr.