Than Sadet Waterfall

A historic cascading river valley in eastern Koh Phangan, revered by Thai royalty. King Chulalongkorn (Rama V) visited these cascades fourteen times between 1888 and 1909, carving his royal initials into the granite boulders, later joined by Kings Rama VII and Rama IX.

Features natural granite plunge pools and shady jungle walks stretching down to Than Sadet beach.

• Located within Than Sadet - Ko Pha-ngan National Park
• Look for the carved royal monograms on smooth granite boulders near the stream
• Water volume peaks during the monsoon and post-monsoon months (October–January)