Doi Khun Tan National Park

Doi Khun Tan is located on a mountain range bordering on both Lampang and Lamphun Provinces. There is a 1,362 meter long tunnel, regarded the longest in Thailand, for railroad underneath the mountain. There are accommodations, which belong to the Royal State Railway of Thailand, a missionary party, and the Royal Forestry Department, on top of Doi Khun Tan.