9th largest district in Tamil Nadu in terms of size and fifth largest district in terms of population. Being surrounded by hills and landscape dotted with hillocks this place is considered to be a geologist paradise. The town itself is surrounded by an amphitheatre of hills, the Nagarmalai in the north, the Jeragamalai in the south, the Kanjanamalai on the west and Godumalai on the east. The city is bisected by the Thirumanimuthar river.