Koh Hong is a very outstanding island located in the northwest of Ao Nang. Almost compleately surrounded by Limestone Mountain, thebay in the morth of this island is so similar to a hall, and this is the reason why the island is called Koh Hong, which means a hall island.
Koh Hong is quite a popular island for both Thai and foreign travelers. It is the location of Than Bok Khorani National Park Ranger Unit. There are two sandy beaches in the front and the back. The former is the main port, so it is not very suitable for a swim . The Koh Hong archipelago is a group of small islands between Krabi and the northern part of Phang Nga Bay, and east of Koh Yao Noi. Koh Hong, the main island is located around 24 nautical miles to the east of Phuket , It is the location of Than Bok Khorani National Park Ranger . This island can also be approached via a short cut between the two Koh Yao Islands subject to tide conditions. Via the short cut the island is about 16 nautical miles east of Phuket. The sea depth is about 10 -30 feet with many groups of fish. There is the curved bay at the north of the island. The inner area is of beaches and mangrove forests surrounded by limestone mountains making the island look like the room shape which is the source of the name Koh Hong or Room Island where kayaks can get through the inner part. During low tide, you can walk comfortably at this area where a lot of starfish is found. Another island nestled near Koh Hong is Koh Pak Bia of good swimming area and beautiful sandy beach, Koh Lao La Ding of wonderful beach and coral reefs Koh Hong has only one beach but it is recognized for being extremely beautiful, boasting fine white sand, coral and lots of varieties of tropical fish. Beach is framed by limestone rock formations which give it an enclosed feel. Coupled with the fact that there are seldom many people there, Koh Hong very much offers a ‘deserted island’ experience. Its name comes from an eroded group of caves in the middle of the island which harbours a large lake with a small passage to the sea. When the tide is high long tail boats are able to enter the ‘room’ and visitors can swim in around in crystal clear water with a depth of around one metre. Koh Hong is another collection point for the nests that provide the ingredients for bird’s nest soup
At Koh Hong, visitors could do many kinds of activities including snorkeling, scuba diving, fishing, sea-canoeing and nature studying along the 400-meter-long hiking trai around Koh Hong. Apart from Koh Pak Bia, and Koh Lao La Ding, for example. Koh Hong group can be reached within twenty minutes from Ao Nang by speedboat, or 45 mins by longtail. The most convenient way is to buy the package tour of half day or one day. You will be brought to see the islands nature or kayaking and offered food and beverage which is much better than going by yourselves.