Ob Khan National Park has a compelling history as a conservation area with immense geological diversity. The name Ob Khan is derived from the Northern Thai word "Ob," meaning a narrow mountain gorge with a river flowing through it, and "Khan" from the Wang River (Mae Nam Khan) that passes through the area. These gorges were formed by thousands of years of water erosion, creating high cliffs with complex shapes. The area was designated as a national park to preserve its natural resources and the vital headwaters of the Hang Dong district.

The reason Ob Khan National Park is so popular is the magnificent stone cliffs that resemble a natural grand canyon. The signature spot is Ob Khan, the narrowest part of the river flanked by steep cliffs on both sides. Historically, it has been a favorite retreat for Chiang Mai locals during weekends, as it is close to the city and offers diverse activities ranging from nature trekking to refreshing water play.

The general atmosphere of Ob Khan is shady and cool, provided by the flowing water and shadows of high cliffs. Upon entry, you will hear the sound of water hitting rocks and the calls of forest birds. The area around the Wang River features small sandy beaches and rocky flats perfect for relaxing or picnicking. The atmosphere is particularly lively in summer with visitors swimming, while in winter and autumn, it returns to a peaceful state with sunlight reflecting off limestone cliffs into the clear water.

A must-do activity is walking the Ob Khan Nature Trail, which leads visitors along the cliff edges and across a suspension bridge for a high-angle view of the gorge. Swimming in safe spots and tubing down the Wang River are also highly popular. For adventurers, you can trek to other points like "Ob Hi" or "Tong Cave" to explore natural wonders and rare flora like the "Dwarf Ob Khan" (Primula), found only here. Ob Khan perfectly combines fun with geological beauty.

The impression of Ob Khan National Park lies in witnessing nature’s power to create stunning stone sculptures. Every step on the wooden walkway along the cliff reflects the richness of the riverside ecosystem. It is an ideal place to escape the chaos for a short time amidst pure and powerful nature. It stands as one of the natural prides of Hang Dong that every traveler should experience.

• Private Car: From Chiang Mai city, take Highway 108 (Chiang Mai-Hod) toward Hang Dong. At the Samoeng junction, continue straight, then turn right onto Road 1269 (Hang Dong-Samoeng). Turn left toward Nam Phrae and follow the signs for Ob Khan National Park until the end of the road. Well-paved roads throughout.

• Public Transport: It is recommended to rent a motorcycle or hire a Red Truck (Songthaew) or taxi from the city, as there are no direct public buses to the park.

• Best Visiting Season: Accessible year-round. Winter (November–February) offers the coolest weather and clearest water. Summer is best for swimming.

• Preparation: Bring a change of clothes if you plan to swim, and wear shoes with good grip if you intend to hike the nature trail.

• Photography: The suspension bridge and the viewpoint along the Ob Khan cliff edge are the most iconic and beautiful photo spots.

• Safety: Be cautious when swimming in deep or fast-flowing spots and strictly follow the park rangers' warnings.

• Facilities: Includes a visitor center, camping area, welfare shop, and clean restrooms.

Admission Fee:

• Local Visitors: Adult 20 THB / Child 10 THB

• Foreign Visitors: Adult 100 THB / Child 50 THB

• Vehicle Fee: Car 30 THB / Motorcycle 20 THB

Opening Hours:

• Open daily: 08:30 – 16:30