In the Sirumalai region, religion is primarily Hindu, expressed through village temples and hill‑top shrines. The area is famous for ancient Shiva and Murugan temples on sacred hills
such as Agasthiarpuram and
Vellimalai
The Vellimalai (Vallimalai) Murugan Temple in Sirumalai is a small but famous hilltop shrine dedicated to Lord Murugan (Balasubramanya). The temple sits atop a roughly 200‑foot‑high hill and is approachable by a flight of about 100–106 stone steps cut into the slope, surrounded by dense green forest and rocky terrain. It lies within the Sirumalai hill station belt, which is popular for both nature tourism and pilgrimage.
, where people perform rituals and offer prayers in the midst of dense forests and cool hills. This blend of spirituality, nature, and Tamil cultural traditions forms the core of religious life in Sirumalai.