Agasthyakoodam is the second highest peak in Kerala, at a height of 1890mts above sea level and is a part of the Sahyadri range of mountains.It is 60 Kms North East of Trivandrum.The mountain is revered by both Buddhists and Hindus, as it is believed to be the abode of the Bodhisattva Avalokitesvara as well as of the sage Agastya, a disciple of Shiva.
The forests of Agasthyakoodam are rich in rare medicinal herbs and plant, and hued orchids. In 1992, an area covering around 23 sq kms was established as Agasthya Vanam Biological Park. The intention was to restore the degraded forests and to use it for educational purpose. The season from December to April is advocated for trekking and is a distance of 28 kms to the top. It takes approximately two days and trekking is permitted only between December and April.
Between elevations ranging from 1000 to 1500 metres, the Manjolai area is set deep within the Western Ghats within the Kalakkad Mundanthurai Tiger Reserve in the Tirunelveli District. Located on top of the Manimuthar Dam and the Manimuthar Water Falls, the Manjolai area has tea plantations, small settlements around the tea plantations, Upper Kodaiyar Dam, and a windy view point called Kuthiravetti.
The tea plantations and the whole of Manjolai Estates are operated by the Bombay Burmah Trading Corporation Ltd on forest lands leased by the singampatti zamin. There are three tea estates in the Manjolai area — Manjolai Estate, Manimutharu Estate, and Oothu Estate. The estates are on elevations ranging between 2,300 and 4,200 feet (701 and 1,280 m). The estates, road, and the settlements in the Manjolai area are managed by the Bombay Burmah Trading Corporation Ltd.