Anaimalai hills are famous for Anaimalai tiger reserve, Aliyar reserved forest, Valparai hill station, and Kadamparai hydroelectric power plant. Nilgiri hills are home to Nilgiri Thar and famous for its hill stations, Ooty, and Coonoor. Palani hills are famous for Kodaikanal hill station. Varusanadu and Andipatti hills are associateed with the Srivilliputhur Grizzled Squirrel wildlife sanctuary and Vaigai river.