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 in the Gulf of Thailand.
The islands have spectacular caves, lagoons and beautiful beaches, and are characterized by hundreds of limestone monoliths, carved into fantastic shapes by years of erosion. The park is famous for its natural beauty untouched by development.
There are few diving sites on the northern islands, more ideal for snorkeling, most of the islands are close to each other making a breathtaking panorama sailing around the park. Hundreds of beaches here in the archipelago are deserted.