Nagqu Prefecture (also Naqu or Nagchu; Tibetan: ནག་ཆུ་ས་ཁུལ་, Wylie: Nag-chu Sa-khul; simplified Chinese: 那曲地区; traditional Chinese: 那曲地區; pinyin: Nàqū Dìqū) is the largest prefecture of the Tibet Autonomous Region.[1] Nagqu has a total area of 450,537 km2 (173,953 sq mi). The prefecture is divided into 11 counties and the capital of Nagchu Town is located within Nagqu County.