Emerald Cave

Emerald Cave is a cave located on the west coast of Ko Muk Island, - The paradise island of Ko Muk and Emerald Cave are part of the Trang Provence, Southern Thailand.

The cave has a narrow 80

m long tunnel. The cave can be entered either by swimming or by using a kayak. It is best to see the cave at mid tide, because at low tide there will be no water, hence no 'emerald' on the beach inside.

Source: Wikipedia