The Temple of Dev Mahunag is situated at the valley of karsog which is in district Mandi, Himachal Pradesh. The temple is about 25 km away from main Karsog market. Arround the temple there are many attractive viewsfull of scenic beauty and abundance of apple orchards.
Dev Mahunag temple is amediable styled pahari temple and it is devoted to Lord Karna, who played very special role in Mahabharata, locally known as Mahunag. It is said that, whenever the devotees are in trouble and they askLord Karna for help, he metamorphoses himself into "MAHU" (Bee) and hastens to their help. The records of Mandi speak about the temple, which was constructed in 1664 by Raja Shyam Sen ,who was a great devout of Lord Karna.