Sundernagar, located at a distance of 24 km from Mandi, is known for its beautiful temples including the famous Mahamaya Temple and the Sukhdev Vatika. This princely state was formerly known as Suket. The municipal council of the district of Mandi is located here in Sundernagar. Situated at an elevation of 861 m, this town is known for the Beas-Sutlej Hydel Project, which is regarded as the biggest hydroelectric project in Asia. This hydel project serves as a major source of irrigation to the Northern Indian Plains.