The Western Ghats mountain range that which runs parallel to the Arabian Sea is known as Ponmudi. It is a hill station in the Thiruvananthapuram district of Kerala in India. It is located 55.2 km north-east of Trivandrum city at an altitude of 1100 m
Ponmudi is blessed with scenic splendor and natural beauty, Ponmudi has a carpet of thick tropical forest that rolls down to the foot of the hill range. No doubt, the salubrious atmosphere and the twisted trails across clear streams must have contributed to her health.
The landscape of Ponmudi is an interspersing of valleys and hills with forestland and plantations. Ponmudi is having an extensive importance of biodiversity, which plays a major role in maintaining the ecological balance of the area.
Ponmudi is host to 283 species of birds, many of which are endangered and threatened.Birds endemic to this region include the painted bush quail, the Malabar grey hornbill, the Wayanad laughing thrush, the broad-tailed grass bird and the Nilgiri pipit. The grasslands of Ponmudi are the breeding grounds of the broad-tailed grass bird, a threatened species. 'Fifty-nine per cent of the 483 bird species in Kerala are found at Ponmudi. Of the 16 species of birds endemic to the Western Ghats, 15 are at Ponmudi. Of the 332 species of butterflies in the Western Ghats, 195 are found here. Of the 37 butterfly species endemic to the Ghats, 24 are found at Ponmudi. The spot puffin, a rare butterfly, has been sighted at the Kulachikarai-Panayam-Merchiston area where ISRO's land comes.Similarly, Ponmudi is also host to many species of reptiles and amphibians, including the highly endangered Travancore tortoise, the Malabar flying frog and the Malabar tree toad.