The temple is 30 KM from Motihari in the East Champaran district bordering Nepal. According to Shiv Puran, King Som constructed this 55 Feet high temple almost 2000 years ago. It is also believed that this Panchmukhi Lingam of Mahadeo is self-existent. The famous Someshwar Nath Mahadev Temple is age-old and attracts lakhs of pilgrims from other districts as well as Nepal on the occasion of Shrawani Mela (During July-August). On the occasion of Mahashivratri, there is an influx of tourists for worship here.