Where is Vallam?

Tanjore11.3 km · 7.0 mi → Thirukattupalli17.9 km · 11.1 mi → Thiruvaiyaru18.9 km · 11.7 mi → Thanjavur19.6 km · 12.2 mi → Ayyampettai24.1 km · 15.0 mi → Puliyur25.7 km · 16.0 mi → Pullambadi29.5 km · 18.3 mi → Ammapettai29.6 km · 18.4 mi → Karambakkudi30.4 km · 18.9 mi → Lalgudi31.4 km · 19.5 mi → Papanasam32.6 km · 20.2 mi → Kiranur34.2 km · 21.2 mi →

Abiramam9.44230, 78.43990 → Adirampattinam10.34059, 79.37905 → Aduthurai11.01542, 79.48093 → Alagapuram11.88705, 78.91758 → Alandur13.00250, 80.20611 → Alanganallur10.04697, 78.09033 →