In 1995, Mair claims that the earliest mummies in the Tarim Basin were exclusively Caucasoid, or Europoid with east Asian migrants arriving in the eastern portions of the Tarim Basin around 3,000 years ago while the Uyghur peoples arrived around the year 842. In trying to trace the origins of these populations, Victor Mair's team suggested that they may have arrived in the region by way of the Pamir Mountains about 5,000 years ago.