Oachira is sole place of worship with neither a structure to house an idol nor an idol around which temples are usually built.
The presiding deity at this sanctum-sanctorum is the abstract principle of the 'Parabrahmam' or the 'Divine Omnipresence' or 'Universal Conciousness'.
The main events at the temple, 'Oachirakkali' festival falls in mid-June, while the 'Panthranduvilakku' or the twelve-day fair of lights gets underway in November/ December.
'Ochirakkali' is a mock fight enacted among groups of men dressed as warriors in the 'padanilam' (fighting arena).
They perform a martial dance standing in knee-deep water, brandishing swords and shields, and splash water every direction.