| Sea or lake in the central mountains. On Koh Mae Koh. The geological phenomena. The limestone basins caused by the collapse. In the sea look wide oval 250 meters 350 meters 7 meters deep with an area of about 30 rai of beautiful scenery. From the view point to the stunning scenery. The emerald green sea. And see the beautiful scenery of the open sea. The hillock surrounded by them. And outdoor covered.