Koh Hong Islands
An emerald lagoon hidden behind a gap in the rock, ringed by limestone cliffs and nothing else.
Limestone walls around a sheet of green water
The Koh Hong Islands, in Krabi, are known for their crystal-clear turquoise water and the dramatic limestone cliffs that rise straight out of the Andaman Sea. What makes them unmistakable is the hidden emerald lagoon at the centre of the main island, reached through a narrow entrance in the rock — “hong” means room in Thai, and that is exactly what it feels like.
The archipelago is made up of Koh Hong, the main island, along with Koh Lao Lading (Paradise Island), Koh Pakbia and Koh Daeng — all with limestone cliffs, white-sand beaches and water clear enough to see the reef from the boat.
There are no permanent settlements here, which is precisely why travellers love it: unspoiled scenery, calm water for swimming and snorkelling, and the feeling of having stepped away from the crowds into a tropical paradise that still looks after itself.
What you’ll find
White-sand beaches and shallow, clear water that make Koh Hong one of the most inviting swimming spots on the Andaman coast — calm enough for all ages and made for long, unhurried afternoons.
The emerald lagoon, enclosed on every side by towering cliffs and reached only through a narrow gap in the rock, where the water glows green and the silence is complete.
Snorkelling straight off the beach, with coral reefs just below the surface and reef fish, sea turtles and colourful corals in the clear Andaman water.
Panoramic viewpoints over the archipelago: limestone peaks, turquoise bays and jungle-covered slopes stretching to the horizon.
A quiet, natural setting. With no permanent settlements, the islands stay pristine and the atmosphere genuinely peaceful.
Koh Hong moments
Krabi’s quietest paradise
The Koh Hong Islands are the right choice for travellers looking for natural beauty, calm and landscapes they will still be picturing months later.
Go early in the day, before the boats from Ao Nang arrive, and the lagoon is yours — which is when you understand why this is one of the most loved island escapes in Krabi.