Alagankulam is a village situated on the east coast in the Ramanathapuram Taluk and district. The village is situated on the banks of the Vaigai River and is about 3 kilometres (1.9 mi) away from the seashore. The village is located 18 kilometres (11 mi) east of Ramanathapuram. The village has a population of 15,473 as of the Population Census of 2011. The carbon dating report of the artefacts excavated from Azhagankulam in Ramanathapuram District revealed that they dated back to 345 BC. With the artefacts having Tamil inscriptions, this could prove that Tamil was older than Prakrit which is dated to be from 268 BC to 232 BC.