Tirthan Valley Trek is a stunning and scenic trek in the Great Himalayan National Park (GHNP) that follows the Tirthan River. The trek is suitable for both beginners and experienced trekkers. The trek takes place in the Great Himalayan National Park, a UNESCO World Heritage Site. The park is known for its biodiversity and is home to many endangered species. Some of the key Highlights are The trek offers views of the Tirthan River, green valleys, white-water streams, snow-capped mountains, and high-altitude lakes.