Doi Khun Tan National Park in the Lampang area holds immense significance as the starting point of a new chapter in northern Thailand's rail transportation. The Hang Chat District side of Lampang is the site of the Khun Tan Tunnel, the longest railway tunnel in Thailand (1,352.10 meters). Construction began during the reign of King Rama V under the supervision of German engineer Mr. Emil Eisenhofer. Excavating through solid rock and navigating the treacherous terrain of that era required extraordinary perseverance from local laborers in Lampang and nearby areas. Thus, this tunnel is not merely a structure but a monument to the diligence that connected Lampang to the nation's capital.

A key landmark located within the Lampang boundaries is Khun Tan Railway Station, which holds the title of the highest railway station in Thailand at an elevation of 578 meters above sea level. The architectural design of the station and the meticulously crafted red-brick tunnel entrance reflect Western influences blended with the Lanna way of life in the past. The history of constructing this railway through Doi Khun Tan was a pivotal factor in establishing Lampang as one of the most important hubs for logistics and travel in the North before the advent of major highways.

In terms of strategic history, the Doi Khun Tan area in Lampang played a vital role during World War II, serving as a military observation post. The hiking trail from the railway station towards the mountain peaks (from Yor 1 to Yor 4) allows visitors to witness the transition from mixed deciduous forests to magnificent pine forests. Specifically, at Yor 2, the area once served as a logging site for the Bombay Burmah Trading Corporation in the Lampang forest before becoming a retreat for high-ranking officials. This trail is therefore steeped in the political and economic narratives of Lampang’s yesteryears.

Beyond the historical accounts, the Doi Khun Tan forest on the Lampang side serves as a crucial watershed for the Mae Tha River basin. The atmosphere around the railway station in the early morning is often shrouded in mist that flows along the tracks, offering a solemn and beautiful vista reminiscent of a painting. The park provides camping areas and safe nature trails, allowing travelers to experience the scent of history while breathing the pure air of ancient pine forests that stand resiliently alongside Lampang's mountains.

A visit to Doi Khun Tan on the Lampang side is more than just a hike to conquer a peak it is a journey to remember the greatness of the ancestors who collectively built a legacy of engineering and history. It stands as a testament to the perseverance deeply rooted in the land of Lampang, enduring through the ages.

• By Train (Main Route): Alight at Khun Tan Station (Lampang) to see the longest railway tunnel in Thailand. From the station, a 1.3 km uphill walk is required to reach the national park headquarters.

• By Private Vehicle: From Lampang city, use Highway 1 (Phahonyothin Road) towards Lamphun Province. Turn right at the Mae Tha intersection onto the rural road leading to the park.

• Local Shuttle: Shuttle services are available from the railway station to the park headquarters for those who prefer not to hike.

• Best Season: November – January to experience the cold weather and the morning mist covering the railway station.

• Preparation: The hike to Yor 4 is approximately 10 km round-trip. Carry sufficient water and wear sturdy hiking shoes suitable for steep terrain.

• Photography Spot: The red-brick entrance of the Khun Tan Tunnel on the Lampang side is a must-visit. (Exercise caution near the tracks and strictly follow warning signs).

• Historical Insights: Pay respects at the Chao Pho Khun Tan Shrine and visit the monument of Mr. Emil Eisenhofer to learn about the tunnel's construction history.

• Planning: If traveling by train, carefully check the train schedules as they are the heart of this journey.

Admission Fee:

• Thai Nationals: Adult 40 THB, Child 20 THB

• Foreign Visitors: Adult 200 THB, Child 100 THB

Opening Hours:

• Open daily from 08:00 AM – 06:00 PM.

• For those arriving by early morning trains, park officials can be notified to allow early access to the hiking trails.