the winter, after fattening up in the summer and while the weather is conducive to storage. Trade has played an important role for the Changpa as they are not able to produce all the goods they consume. Salt, meat, live animals, wool, and unprocessed cashmere are traded for basics such as grain, cooking pots, and other metal implements, as well as more modern goods. Tibetan Changtang Most of the Tibetan Changtang is now protected nature reserves consisting of the Chang Tang Nature Reserve, the second-largest nature reserve in the world, and four new adjoining smaller reserves totaling of connected nature reserves that represent an area almost as large as Spain. Since the reserves have been established there has been a welcome increase in the numbers of endangered species. The protected areas stretch across parts of the Tibet Autonomous Region, Xinjiang and Qinghai in China. Located in the Nagqu prefecture, the average elevation of Tibetan Changtang is as high as 5,000 meters. The Nagqu Horse Festival is the most important festival here. Ladakhi Changtang Only a small part of Changtang crosses the border into Ladakh, in India. It is, however, on a historically important route for travellers journeying from Ladakh to Lhasa, and now has many different characteristics due to being part of India. As in the rest of Ladakh, Changtang has been experiencing many socio-economical developments since the late twentieth century. Ladakh is one of the regions most exposed to international mass tourism in India. Centuries-old cultural and social fabrics are now changing rapidly, influenced by consumerist and modern lifestyles. This is becoming a source of both concern and hope for the populace of the region. Another major influence in the region is Tibetan settlement at the behest of the Tibetan government-in-exile. The settlement was first established in 1963 with almost 3,000 residents but today it has more than 7,000 settlers. For administrative purposes, the Ladakh settlement is divided into two, Sonamling and Changtang. The Changthang Wildlife Sanctuary is home to many rare species of flora and fauna, which are well cared for in this wildlife sanctuary. The sanctuary is located at high altitude in the Leh district of Ladakh. The Changtang Wildlife Sanctuary is surrounded by Three large and world-famous water lakes, the Tsomoriri, the Tsokar Lake and the Pangong Tso. Tsomoriri is one of the huge mountain lakes in the southeastern part of Ladakh. Karzok village at above