Adichanallur is an archaeological site in Thoothukudi district in Tamil Nadu, India that has been the site of a number of very important archaeological finds. Korkai, the capital of the Early Pandyan Kingdom, is located about 15 km from Adichanallur. Carbon dating of samples excavated in 2004 from the Adichanallur site has revealed that they belonged to the period between 1000 BC and 600 BC. In 2005, around 169 clay urns containing human skeletons were unearthed that date back to at-least 3,800 years. In 2018, research on copper metal remains were dated at Manipur University to 1500 BC. But the dating method was not accepted as accurate and carbon dating of the remains is emphasized to settle the issue and reduce the error margin in OSL dating.