­Angthong National Marine Park is a pristine archipelago of 42 islands in the Gulf of Thailand. It features towering limestone mountains, thick jungle, white-sand beaches, waterfalls and hidden coves and lakes to explore.

Within sight of Koh Samui, Ang Thong Marine Park is a protected area of more than 100 square kilometers of land and sea. It is home to a rich variety of exotic wildlife and sea creatures. Snorkeling, hiking, sea kayaking, diving, and simply relaxing are the main activities to enjoy at Ang Thong.

Most Ang Thong visitors arrive on a join-in day trip or by speedboat from Koh Samui or Koh Phangan. For those who wish to stay overnight, there are simple bungalows and camping tents available on Koh Wua Ta Lap. Transfer from Koh Samui for the overnight trip is only available by joining the Big Boat Day Tour. The Parks Headquarter also hosts a simple restaurant.

Only one of its islands, Koh Paluay, is inhabited. Its home to a sea-gypsy community that largely maintains its traditional fishing lifestyle.

The Angthong Marine Park has some of the most unusual and spectacular scenery in all of Thailand. Its steep limestone cliffs, some rising as high as 400 meters, have been formed into wondrous shapes by centuries of erosion.

In the surrounding sea many colorful fish can be seen, offering some decent snorkeling and diving sights. With 42 islands to discover, a complete tour of Ang Thong Marine Park would take weeks. Only a few islands are visited during day trips from Samui.

Koh Mae (Mother Island), this island has a stunning beach and an inland saltwater lagoon called Emerald Lake. A popular climb up pathways and a wooden staircase takes you to the peak of a nearby mountain where you get the full view of this glittering sea-green body of water.

As a national park, only government-approved tour boats may enter Ang Thong. These day trips may be booked on Koh Samui, Koh Phangan or Koh Tao.

Sailing live aboard cruise trips and private speedboat charters can be organized. Most tours stop at a few different locations. They combine a day of hiking, sightseeing, kayaking and lounging on the beaches. Some of the hikes require a good level of fitness

The national park entry fee is 300 baht for foreign adults, 100 baht for foreign children, and 40 baht for Thai nationals. The park is closed for maintenance from 1st November to 15th December. Some tours still go to the park in this period but avoid the Emerald Lake and The main island.

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