Thiruvullakkavu Navaratri Mahotsavam or Thiruvallakkavu festival is celbrated every year in Sree Dharmasastha Temple, located in Cherpu of Thrissur district in Kerala. This temple is dedicated to Lord Sastha(Ayyappa) and here the deity is worshipped in his self-manifested form. Besides being a Lord Sastha temple, Navarathri is very auspicious for this temple. The temple is considered to be the Abode of Wisdom by the devotees