Doi Khun Tan National Park covers approximately 159,556.25 rai (255.29 sq km) across Lamphun and Lampang provinces. It is one of the most unique parks in Thailand, allowing visitors to arrive directly by train before hiking into the mountains. The park is an important watershed area, with streams such as Huai Mae Tan and Huai Mae Sai, and features rugged mountain ranges with some ridge-top plains. The highest peak, Doi Khun Tan, rises to approximately 1,304 meters above sea level.

Geography and Ecosystem

The forest changes with elevation and includes:

• Tropical evergreen and hill evergreen forests (above 1,000 meters)

• Pine forests and mixed deciduous forests (above 700 meters)

Wildlife found here includes barking deer, sambar deer, wild boar, monkeys, langurs, flying squirrels, jungle fowl, and various bird species. The atmosphere is peaceful and ideal for nature study and relaxation.

The Y. Routes (Strategic Hiking Trails)

The main hiking trail is divided into four sections:

Y.1 – About 1.5 km from the park headquarters, featuring historic railway guesthouses and structures related to early railway construction.

Y.2 – A popular camping area surrounded by pine forest and old lychee orchards, including a former residence of M.R. Kukrit Pramoj.

Y.3 – A quiet forest zone once used by missionaries.

Y.4 (Mon Song Klong) – The highest viewpoint offering 360-degree panoramic views, famous for sunrise and sea of mist.

Khun Tan Tunnel – Engineering Heritage in the Mountains

Khun Tan Tunnel is approximately 1,352 meters long, making it the longest railway tunnel in Thailand. Constructed by German engineers, the area includes landscaped flower gardens, Chao Pho Khun Tan Shrine, and a monument honoring the construction supervisors. It beautifully connects natural scenery with railway history.

Waterfalls and Natural Attractions

• Tat Moei Waterfall – About 10 meters high, located between Y.2 and Y.3, requiring a 300-meter descent into the valley.

• Pha Toom Waterfall and Huai Mae Phrai Waterfall – Forest waterfalls surrounded by lush greenery.

• Mae Long Waterfall – Flows year-round, located about 10 km south of Khun Tan Station. Visitors can get off at Mae Tan Noi Station and walk approximately 3 km to reach the waterfall.

Climate

The park has three seasons:

• Rainy Season (May – October) – Lush and green, especially July–August.

• Summer (February – April) – The summit remains cool and comfortable.

• Winter (November – January) – Cold temperatures, particularly in early mornings and evenings.

Temperatures are generally 5–10°C cooler than the lowlands.

Facilities

The park provides accommodation houses and tents for rent, as well as designated camping areas for visitors bringing their own equipment. A visitor center and basic facilities are available.

By Train:

• Get off at Khun Tan Railway Station, then walk approximately 1.3 km uphill to the park headquarters. This is a unique and memorable way to visit the park.

By Car:

• Take Highway No. 11 (Lamphun–Lampang route), turn at the Doi Khun Tan intersection, and follow the paved road to the visitor center.

• Start hiking to Y.4 at around 4:30 AM for sunrise views.

• Wear proper hiking shoes with good grip.

• The best travel period is November – February.

• Bring sufficient drinking water.

• Reserve accommodation or camping space in advance during holidays.

Admission Fee:

Thai Visitors

• Adults: 20 THB

• Children: 10 THB

Foreign Visitors

• Adults: 100 THB

• Children: 50 THB

Note: Additional vehicle fees apply.

Opening Hours:

• Open daily: 08:00 AM – 06:00 PM
  Overnight visitors may access the area according to park regulations.