Since 1997, a grand yagna called "Maha yaham" is conducted every year in the Tamil month of Adi. So far, Manthralayam has seen fourteen maha yahams to its credit. It is a three day spiritual activity consisting a vahana pooja and vidhya pooja for children and also for people of all ages who aspire to acquire knowledge. On the third day prominent personalities, heads of various mutts, spiritual leaders, Astrologers and the like are invited to render discourses to the people assembled in thousands. An awareness of co-existence, the need of spirituality, loving all creatures, is created in the minds of the devotees gathered to attend the Maha yaha. An interstate yoga competition is being held from the year 2007.