Nam Tok Than Sadet national park is located on Phangan island of Surat Thani province, just north of the popular tourist island Koh Samui.
The park covers much of Phangan island and nearby small islands of rocks.
Koh Phangan is hilly and is covered by fertile evergreen forest, including bamboo and rattan.
Dry evergreen forest covers the sloping hill sides and there are no big tree found probably because of exposed soil condition.
Up to 200 mammals, bird species, reptiles, amphibious, and aquatic animals have been recorded.
The weather is generally fair and good all year round, and therefore visiting the park can be any time of the year. However the heavy rainy seaon from September to November will be wet.
Places to visit Than Sadet waterfall is the biggest fall on Phangan island.
Ao Than Sadet (Than Sadet bay) close to the waterfall, is made up of a beautiful beach and clear water.
Khao Lah is the highest mount on the island (627 metres) with a panorama view of 360 degrees.
Tungku and Tungka island is a limestone mountain with rough rocks: a place where sea gulls lay their eggs. Water around this island is good for diving.
National park office can be contacted at the phone number: 077-238 275.
How to get there There are daily ferry boats from Surat Thani and Koh Samui island.