ANAMALAI HILLS (ANAiMALAI), a range of mountains in southern India, in the Coimbatore district of Madras, lying between io° 13' and io° 31' N., and between 76° 52' and 77° 23' E., forming a portion of the Western Ghats, south of the Palghat pass. They consist of a forest-clad and grassy tableland, with summits rising about 8,000f t. ; Anaimudi peak (8,85oft.) is the highest in southern India. Their formation is metamorphic gneiss, veined with felspar and quartz, and interspersed with reddish porphyrite. The lower slopes yield valuable teak and other timber.