The National Fossil Wood Park, Tiruvakkarai is a notified National Geo-heritage Monument located in the Villupuram District in the Indian state of Tamil Nadu and is maintained by the Geological Survey of India.

[1] The park was established in 1940[2] and is located 1 km east of Thiruvakkarai[3][4] village on the road between Tindivanam and Pondicherry.

The park consists of nine enclaves, but only a small portion of the 247 acres (approx 1 square km) is open to the public.

[7] Officials of the GSI believe the fossils were formed during massive flooding that occurred millions of years ago.

[8] Scientists speculate that the trees did not originally grow at the site, but were transported before they had petrified.