Bua Tong waterfall, also known as "Sticky Waterfall," is a unique and beautiful natural wonder located in the Si Lanna National Park in Chiang Mai Province, Thailand. What makes Bua Tong waterfall special is the fact that the limestone rocks it flows over have a natural non-slip surface, making it possible for visitors to climb the falls without the use of ropes or other climbing equipment.

Bua Tong waterfall is made up of a series of small cascades that flow into each other, forming a beautiful and refreshing pool at the base. Visitors can climb up the falls and enjoy the various pools and views along the way. The climb can be challenging at times, but the non-slip surface of the rocks makes it much safer than other waterfall climbs.

The area around Bua Tong waterfall is also a great place to explore the natural beauty of the Si Lanna National Park. Visitors can go hiking or mountain biking on the many trails, or simply relax and enjoy the serene surroundings. Wildlife such as monkeys, birds, and butterflies can often be spotted in the park.

Bua Tong waterfall is easily accessible by car or motorbike from Chiang Mai, and there is a small parking lot and visitor center at the trailhead. The best time to visit is during the dry season (November to March), when the water flow is lower and the climb up the falls is easier.