[1][2] Passenger train service to the Yining railway station (43°58′00″N 81°16′30″E / 43.96667°N 81.27500°E / 43.96667; 81.27500) began in July 2010.[3] One of the three daily Ürümqi-Yining passenger trains (all running overnight) was extended to Khorgos in December 2013.[4] On its way from the Dzungarian Basin (where the Northern Xinjiang railway runs) to the Ili Valley (where Yining is), the railway crosses the Borohoro Mountain Range (one of the ranges of the Tian Shan) in the 13-km long North Tianshan Tunnel (Chinese: 北天山隧道; pinyin: Běi tiānshān suìdào).A regular passenger service between Almaty and the Altynkol railway station on the Kazakh side of the border opposite Khorgos opened in September 2012.[5][6] The railway border crossing (freight port of entry) at Khorgos became operational in December 2012.