Linking the lush green Kullu Valley with the stark, arid Lahaul, the Hampta Pass Trek is an amazing crossover trip. The landscape changes into large meadows and glacier-covered paths as you ascend from Jobra and negotiate forests of pine and maple. Perched at almost 14,000 feet, the pass serves as a natural portal between two quite different worlds. It gives hikers a rare opportunity to see two quite distinct Himalayan environments on one trip.