Description: Emerald Lake (Blue Lagoon). Climb some steep stairs in order to see the lake with magnificent water surface color. Emerald saltwater lake is called 'Thale Nai'. The lake is surrounded by limestone cliffs and has an underwater cave that is connected to the sea.
Address: Ang Thong, Ko Samui District, Surat Thani 84140, Thailand
Diving: Suitable for diving
Accessibility/parking: 1000 m