Tibetan Buddhism is a form of Buddhism practiced in Tibet, Bhutan, and Mongolia. It also has a sizable number of adherents in the areas surrounding the Himalayas, including the Indian regions of Ladakh, Darjeeling, Sikkim, and Arunachal Pradesh, as well as in Nepal. Smaller groups of practitioners can be found in Central Asia, some regions of China such as Northeast China, Gansu, Yunnan, Xinjiang, Inner Mongolia and some regions of Russia, such as Tuva, Buryatia, and Kalmykia. It was also formerly practiced in the Baltistan region of Pakistan.