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; shereas the latter is a nice diving spot around 10-30 feet deep.