annual snowfall is only , due to the rain shadow effect. Western passes receive small amounts of fresh snow each year but remain traversible all year round. Low temperatures are prevalent throughout these western regions, where bleak desolation is unrelieved by any vegetation bigger than a low bush, and where the wind sweeps unchecked across vast expanses of arid plain. The Indian monsoon exerts some influence on eastern Tibet. Northern Tibet is subject to high temperatures in the summer and intense cold in the winter. Regions Cultural Tibet consists of several regions. These include Amdo (A mdo) in the northeast, which is administratively part of the provinces of Qinghai, Gansu, and Sichuan. Kham (Khams) in the southeast encompasses parts of western Sichuan, northern Yunnan, southern Qinghai, and the eastern part of the Tibet Autonomous Region. Ü-Tsang (dBus gTsang) (Ü in the center, Tsang in the center-west, and Ngari (mNga' ris) in the far west) covered the central and western portion of Tibet Autonomous Region. Tibetan cultural influences extend to the neighboring states of Bhutan, Nepal, regions of India such as Sikkim, Ladakh, Lahaul, and Spiti, Northern Pakistan Baltistan or Balti-yul in addition to designated Tibetan autonomous areas in adjacent Chinese provinces. Cities, towns and villages There are over 800 settlements in Tibet. Lhasa is Tibet's traditional capital and the capital of Tibet Autonomous Region. It contains two world heritage sites – the Potala Palace and Norbulingka, which were the residences of the Dalai Lama. Lhasa contains a number of significant temples and monasteries, including Jokhang and Ramoche Temple. Shigatse is the second largest city in the Tibet AR, west of Lhasa. Gyantse and Qamdo are also amongst the largest. Other cities and towns in cultural Tibet include Shiquanhe (Gar), Nagchu, Bamda, Rutog, Nyingchi, Nedong, Coqên, Barkam, Sagya, Gertse, Pelbar, Lhatse, and Tingri; in Sichuan, Kangding (Dartsedo); in Qinghai, Jyekundo (Yushu), Machen, and Golmud; in India, Tawang, Leh, and Gangtok, and in Pakistan, Skardu, Kharmang, and Khaplu. Wildlife Sus scrofa expanded from its origin in southeast Asia into the Plateau, acquiring and fixing adaptive alleles for the high-altitude environment. The forests of Tibet are home to black bears, red pandas, musk deer, barking deer, and squirrels. Monkeys such as rhesus macaques and langurs live in the warmer forest zones. Tibetan antelopes, gazelles, and kiangs gaze on the grasslands of the Tibetan plateau. There are more than 500 bird species in Tibet.