page_title: Khun Tan Range
hierarchical_section_title: Khun Tan Range
caption_attribution_description: ไทย: อุโมงค์ขุนตาน คืออุโมงค์รถไฟที่ยาวที่สุดในประเทศไทย English: Khun Tan Tunnel is the longest of Thailand's railway tunnels.
context_page_description: The Khun Tan Range is a mountain range that occupies a central position in Northern Thailand. Most of the range is located in Chiang Mai, western Chiang Rai, Lampang and Lamphun Provinces.
  The geological composition of the Khun Tan mountains is different from the neighboring Thanon Thong Chai Range in the west and the Daen Lao Range in the north. Precambrian rocks are absent in this mountain chain which is thus not part of the Shan Hills system. The geology of the Khun Tan Range is homogeneous with the Phi Pan Nam Range further east and some scholarly works designate the Khun Tan as the "Western Phi Pan Nam Range", including it as part of the Phi Pan Nam Mountain System.
context_section_description: The Khun Tan Range (Thai: ทิวเขาขุนตาน or, erroneously, ทิวเขาขุนตาล) is a mountain range that occupies a central position in Northern Thailand. Most of the range is located in Chiang Mai, western Chiang Rai, Lampang and Lamphun Provinces.
  The geological composition of the Khun Tan mountains is different from the neighboring Thanon Thong Chai Range in the west and the Daen Lao Range in the north. Precambrian rocks are absent in this mountain chain which is thus not part of the Shan Hills system. The geology of the Khun Tan Range is homogeneous with the Phi Pan Nam Range further east and some scholarly works designate the Khun Tan as the "Western Phi Pan Nam Range", including it as part of the Phi Pan Nam Mountain System.
caption: Entrance to the Khun Tan Tunnel. The haze caused by wildfire smoke is common during the dry season
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