Location: Tirthan Valley is located in the Kullu district of Himachal Pradesh, India. Scenic Beauty: Tirthan Valley is known for its stunning natural beauty and is surrounded by snow-capped mountains, rolling hills, and lush forests. It is a popular destination for trekkers, nature lovers, and anglers. Fishing: Tirthan River that flows through the valley is famous for its trout fishing and is considered one of the best trout fishing destinations in India. The river is stocked with rainbow trout and brown trout, and fishing enthusiasts can enjoy fly fishing and other forms of angling.