The temple is dedicated to Lord Mahadeva (Shiva), with sub-deities including Goddess Parvathy, Lord Ganapathy, and Lord Muruga.

Its tranquil setting and regular poojas create a peaceful ambiance for devotees seeking spiritual solace.
Festivals
The Temple has a number of festivals. The important ones are :
Sivaratri Maholsavam
Sivaratri Maholsavam at Maladevarkunnu Mahadeva Temple is a cherished celebration honoring Lord Shiva through a series of heartfelt rituals and community devotion. The festivities include a Ghoshayatra, a vibrant devotional procession, alongside spiritual recitations of the Shiva Purana Parayanam. Devotees also participate in Pushpabhishekam (anointment with flowers), offer Pongala as a form of thanksgiving, and perform Pushpanjali (flower offerings) to seek divine blessings.
Thrikkarthika
Thrikkarthika festival at Maladevarkunnu Mahadeva Temple is celebrated on the Karthika star, usually falling between Malayalam months of Vrischikam and Dhanu. On this sacred day, devotees illuminate the temple grounds with numerous nilavilakkus (traditional oil lamps), creating a serene and luminous ambiance that symbolizes the victory of light over darkness and invokes blessings from Lord Shiva.
Contact Address: Maladevarkunnu Mahadeva Temple, Ullannur, Pathanamthitta, Kerala 689514