Lenghu town, northwestern Qinghai sheng (province), western China. It is situated in the northwestern part of the Qaidam Basin , to the southwest of Dangjin Pass, which leads from the Qaidam region into western Gansu province and to the Uygur Autonomous Region of Xinjiang . Lenghu is one of the major centres of the oil fields developed in the Qaidam Basin during the 1960s and has its own refinery. It is also linked by a highway with the western Qaidam oil field around Mangya and by pipeline with oil fields to the northwest of Yumen . Another highway links it with Golmud in the south-central Qaidam Basin and with Xining in the east . Pop. (2003 est.) 21,000.