Chiang Mai Family Holidays Chiang Mai National Parks
 

Doi Khuntan National Park

Doi Khuntan is not actually in Chiang Mai, but it is only an hour away by car. The most fun way to travel to Doi Khuntan from Chiang Mai is by train. Doi Khuntan is best known for the Khuntan railway tunnel. At 1,352 meters, it is the longest tunnel in Thailand.