Pha Dok Siew Waterfall (Pha Dok Siew Waterfall)—known to many as "Rak Jang Waterfall" after a Thai movie filmed here—offers one of the most authentic and rewarding trekking routes in Doi Inthanon National Park, the “Roof of Thailand.” The trail is community-managed by the Karen Hill Tribe, who live in harmony with the forest and guide visitors through their ancestral land.

The trek begins amidst lush forests, leading through cool bamboo groves, rice terraces, and flower farms before revealing the magnificent multi-tiered Pha Dok Siew cascade. The waterfall is part of the Mae Klang River and features around seven visible levels, with clear pools where visitors can enjoy a refreshing dip or relax in the misty spray.

Along the trail, educational boards describe the diverse plant and animal species native to the park, making the hike both scenic and informative. The path also passes local coffee plantations where visitors can taste freshly brewed Karen-grown Arabica coffee, often roasted right in the village.

The hike concludes at Mae Klang Luang Village, a White Karen settlement where guests can observe traditional crafts and daily life, offering an intimate look at sustainable living and community-based tourism in the highlands.

• By Car: From Chiang Mai city, drive along Highway 108 toward Chom Thong District (about 90 km or 2 hours). Continue on Route 1009 into Doi Inthanon National Park and follow signs to Mae Klang Luang Village. The Pha Dok Siew trailhead is located nearby.

• By Tour or Local Guide: Many Doi Inthanon day tours include the Pha Dok Siew trek as part of their itinerary. Hiring a local Karen guide is mandatory for all visitors for safety and community support.

• By Public Transport: Take a songthaew (shared red truck) from Chom Thong or the park entrance to Mae Klang Luang Village.

• Wear proper hiking shoes; the trail can be slippery during the rainy season.

• Bring insect repellent, a water bottle, and a light raincoat.

• Visit early morning for cooler temperatures and softer light for photography.

• Respect local customs—ask before photographing villagers and avoid disturbing the natural environment.

• Support the local economy by buying coffee or handmade crafts from the village.

Admission Fee:

Included in the Doi Inthanon National Park entrance fee:

• 300 THB for foreign adults (approx),
• 150 THB for children, and
• 50 THB for Thai visitors.
• Local guide fees (about 200–300 THB per person) are paid directly to the Karen community.

Opening Time:

• Open daily from 8:00 AM to 5:00 PM.

The best time to visit is from November to February when the weather is cool and the rice terraces are green.