Mu Ko Ang Thong National Park

Established as a marine national park in 1980, Mu Ko Ang Thong National Park is an archipelago of 42 islands covering 102 km² at the shore of the Surat Thai Province east of Ko Samui in the Gulf of Thailand. The park is registered as a Ramsar site by Ramsar Convention, an international treaty for recognition of important wetlands. Many sources refer to the islands as "Angthong" which is wrong, "Ang Thong" is the correct spelling and means "golden bassin".

The islands cover 18 km² of the park, the major ones are Ko Phaluai, Ko Wua Ta Lap, Ko Mae Ko, Ko Sam Sao, Ko Hin Dap, Ko Nai Phut and Ko Phai Luak. Highest peak is located on Ko Phaluai at 396 meters asl. Islands consist mainly of rugged and steep limestone hills, sinkholes, caves and inland marine lakes. There is one nomadic village at Ko Wua Ta Lap and one other at Ko Phaluai, other islands are uninhabited.