For those longing to reconnect with nature, clear your schedule and ready your cameras. The Umphang Wildlife Sanctuary in Umphang District, Tak Province, has announced the exciting news that Thi Lo Su waterfall—renowned as the most beautiful and grandest waterfall in Thailand—will reopen for visitors starting 1 September 2026.
. “Thi Lo Su”derives from the Karen language, meaning“Black Waterfall.”Locals often interpret it as the waterfall with a thunderous roar. This waterfall features a massive limestone mountain cascade hidden deep within the dense jungle.
The waterfall curtain stretches over 500 meters wide and drops nearly 300 meters in tiered steps. This grandeur has earned Thi Lo Su the title of Thailand’s largest waterfall and a top spot among Asia’s most beautiful waterfalls. The spectacular flow crashing against the rocks creates a misty white spray that blankets the area—an awe-inspiring global natural wonder that captivates every gaze.
Visiting Thi Lo Su is not just about admiring the stunning scenery. A must-experience highlight is rafting on an inflatable boat along the upper Mae Klong River, offering refreshing moments at every turn. Along the way, travelers witness lush green forests, towering limestone cliffs, and hidden smaller waterfalls dotting the route. This presents a full-spectrum eco-tourism adventure combining excitement, challenge, and the chance to breathe pure, fresh air deeply.
A destination to conquer at least once in a lifetime.
Thi Lo Su is a must-visit due to the challenging journey of navigating over 1,219 curves en route to Umphang District. This tests travelers’ determination, but standing before such breathtaking natural grandeur makes the effort worthwhile. Fatigue from the trip transforms into unforgettable memories. Most importantly, visiting this precious forest requires responsible tourism—protecting nature, not littering, and preserving resources—to ensure its lasting beauty.
To reiterate, Thi Lo Su waterfall will reopen to visitors from 1 September 2026 onward. For day trips, no advance ticket booking is required; visitors can purchase tickets on-site. However, those planning to stay overnight must obtain permission and register beforehand, as the entire area falls under the management of the Umphang Wildlife Sanctuary.
Regarding fees, Thai adults pay 30 baht and children 20 baht. Foreign adults pay 400 baht and children 200 baht. An additional 60 baht fee applies per car entering the area.
A key point to plan well is the timing for entering and leaving the area. Day-trip visitors must reach the ticket office at the sanctuary headquarters or Huai Nong Luang unit before 14:00. Entry is allowed from 08:00 to 15:00. Those staying overnight must secure permission and arrive at the ticket office before 16:30.