The Anamala or Anaimalai, also known as the Elephant Mountains, are a range of mountains in the southern Western Ghats of central Kerala (Idukki district, Ernakulam district, Palakkad district, Thrissur district) and span the border of western Tamil Nadu (Coimbatore district and Tiruppur district) in Southern India. The name anamala is derived from the Malayalam word aana and the Tamil word aanai, meaning elephant, or from tribal languages. Mala or Malai means 'hill', and thus 'Elephant hill'. Anamudi Peak (8,842 feet (2,695 metres)) lies at the southern end of the range and is the highest peak in southern India. The Palakkad Gap is the mountain pass which divides it from the Nilgiri Mountains. The northern slopes of the hills in Tamil Nadu now have coffee and tea plantations(especially around Valparai), as well as teak plantations of high economic value. The rest are mostly forests, of mainly two ecoregions-the South Western Ghats moist deciduous forests (mainly in Palakkad district and Idukki district of Kerala, as well as Tamil Nadu) and the South Western Ghats montane rain forests(mainly in Idukki district, Ernakulam district, Palakkad district of Kerala, Coimbatore district of Tamil Nadu). The Western Ghats and Anaimalai Sub-Cluster, including the Anaimalai Hills, are now a UNESCO World Heritage Site. Geography The hills are located between 10° 13' and 10° 31' N. and 76° 52' and 77° 23' E with a central point of: . They are south of where the Western Ghats are broken by the Palakkad Gap, which in, turn is south of the Nilgiri Hills. They border on Kerala to the southwest and the Cardamom Hills to the southeast. To the west is the bamboo-rich Idamalayar-Pooyamkutty valley. The Palni Hills lies to the east, extending into Kerala as the Pampadum Shola National Park. They are spread largely over Palakkad district, Thrissur district, Ernakulam district and Idukki district of Kerala(mainly Palakkad and Idukki), Tamil Nadu's Coimbatore district and Tiruppur district. Their geological formation is metamorphic gneiss, veined with feldspar and quartz, and interspersed with reddish porphyrite. Twelve major forest types are found in the area. The landscape is fragmented by many coffee and tea plantations on the lower slopes and teak plantations higher up. Monsoon rains are heavy. Annual rainfall varies from 2,000 mm to 5,000 mm in the area. Formed by fault-block movements in the Holocene Epoch (i.e., about the past 11,700 years), the Anaimalai Hills descend to form a