Than Sadet Waterfall is one of the most historically and naturally significant attractions on Koh Phangan. The waterfall flows over large granite boulders, forming multiple tiers that stretch down toward the eastern coastline of the island.

Its uniqueness lies in the royal inscriptions of Thai monarchs, especially King Rama V, who visited the site 14 times and left his royal initials engraved on the rocks. King Rama VII and King Rama IX also followed this tradition, making the site both sacred and historically meaningful.

Surrounded by lush tropical rainforest, the area remains pristine and tranquil within the national park. Visitors can walk along short nature trails beside the stream, relax in clear natural pools, and enjoy the calming sounds of flowing water and forest wildlife.

At the end of the stream lies Than Sadet Beach, a quiet crescent-shaped beach with clear waters and a serene atmosphere—perfect for relaxation after exploring the waterfall.

Than Sadet Waterfall is more than just a natural attraction; it is a destination where history, serenity, and untouched nature come together in one remarkable place.

• Car/Motorbike: From Thong Sala Pier, drive past Ban Kai and head դեպի the east coast via the cross-island road. The road is fully paved but steep and winding in some sections. Travel time isประมาณ 30–40 minutes.

• December to April offers clear water and pleasant weather

• Visit late rainy season for stronger waterfalls (beware of slippery paths)

• Wear anti-slip shoes as granite rocks can be very slippery

• Bring insect repellent and drinking water

• Combine your trip with a visit to Than Sadet Beach nearby

Admission Fee:

• Thai: Adult 40 THB / Child 20 THB

• Foreigner: Adult 100 THB / Child 50 THB

(National Park entrance fee)

Opening Hours:

• Open daily: 08:30 – 16:30 PM