About Great himalayan national park The Tirthan Valley is a picturesque area located in the Great Himalayan National Park (GHNP) in the state of Himachal Pradesh, northern India. The valley is situated at an altitude of 1,500-2,500 metres (4,920-8,202 feet) and is surrounded by high mountains, including the 5,639-metre (18,510-foot) high Great Himalayan, 5,242-metre (17,182-foot) Srikanth, and 4,890-metre (16,070-foot) Parvati peaks. The Tirthan Valley is a popular eco-tourist destination and is known for its natural beauty, pristine forests, and riverine landscape. The valley is home to a variety of wildlife, including Himalayan black bears, leopards, and deer. The valley is also a popular destination for trekking and camping.