Thirumukkudal comes from the word ‘mukkudal’ which means union. Thirumukkudal is the union of the three sacred rivers namely Palar, Cheyyar and Vegavati. The place is located at a distance of 4 km from Walajabad. The Archaeological Survey of India has recognised Thirumukkual as a heritage site.
There is an ancient temple in the vicinity which was built by the rules of Thondaiman Dynasty. The main deities of the temple are Lord Agasthiswarar and Anjanakshi.