One of the Tarim mummies from the Tarim basin in northwestern China in the province of Xinjiang, dated to 1800 BC. These mummies are frequently associated with speakers of the Indo-European Tocharian language which since has gone extinct due to assimilation into the Uyghur population at the end of the first millennium AD. It took another millennium to rediscover this lost Indo-European language at the beginning of the 20th century.