Kullu
Trek into the Great Himalayan National Park (UNESCO World Heritage Site) — one of India's most biodiverse wilderness areas with routes through dense temperate forests and alpine meadows visiting the Tirthan Valley, Sainj Valley, and the Rakchham area, home to the elusive western tragopan pheasant.
A mandatory park permit is required (₹200/day Indians, ₹1,000/day foreigners). Hire a GHNP-certified guide from Sai Ropa entry gate.