Theerthakkarai is a holy place of Ayyavazhi. It is located 0.6 kilometres (0.37 mi) south-east of the main pathi at Muttappathi at the end of the Muttapathi road at the rocky-shores. It is the second holiest sea-theertham according to Akilam. This is the place where the second and third Vinchais of Vaikundar took place. It was in memory of this event the Panguni Theertham is conducted.
References
Theerthakkarai Wikipedia(Text) CC BY-SA