Ao Phang Nga and its limestone towers in the Andaman Sea
Published on 08/27/2026 at 12:06 | Editorial responsibility: Rafael Müller, Editor-in-Chief AD HOC NEWS
Ao Phang Nga in Phang Nga, Thailand, is a marine national park where vertical limestone islands rise from shallow green water in the Andaman Sea. Established as Ao Phang Nga National Park in 1981, it protects a bay of karst towers, mangrove forests and tidal channels between the mainland and the island of Phuket.
Karst towers in a sheltered bay
Ao Phang Nga forms part of Phang Nga Bay, a stretch of the Andaman Sea between the island of Phuket and the Kra Isthmus on the Thai mainland. The bay covers an area of about 400 km² and is dotted with islands that break the sea surface as pale cliffs and pillars.The bay covers an area The national park of the same name lies within this bay and takes in parts of Mueang Phang Nga and Takua Thung districts in Phang Nga Province.Ao Phang Nga National Park
The islands are made of limestone that has been shaped into steep faces, ledges and overhangs by erosion. On some islands the cliffs enclose interior lagoons, reached through low sea caves that can be entered at suitable tide levels.Interior lagoons reached through caves Other islands are long ridges of rock with narrow shorelines where boats can anchor in calm water.
Mangrove forests and tidal channels
Along the mainland shore of Ao Phang Nga, mangrove forests line the inlets and river mouths. These forests form one of the largest remaining areas of primary mangrove in Thailand, with channels cutting between stands of trees and out towards the islands.Primary mangrove forests in Thailand The tide moves through a network of waterways, leaving mudbanks exposed at low water and flooding the mangrove roots when it returns.
The landscape of Ao Phang Nga is therefore a combination of open bay, narrow tidal channels and dense coastal vegetation. Boat routes weave through mangrove-lined passages before emerging beside high cliffs or wide stretches of sea.Mangroves and islands within the park From the water the contrast between the dark green trees and the light rock faces is one of the defining sights of the park.
Islands, villages and protected status
Ao Phang Nga National Park was declared in 1981 as a marine protected area covering around 400 km², including mainland coastline, mangrove forests and many islands.The park was declared in 1981 Within this area lie well-known islands such as Khao Phing Kan and Ko Tapu, which appear in many images of the bay.Key highlights include Ko Tapu and Khao Phing Kan Their vertical cliffs and slender sea stacks are characteristic of the karst landscape.
The bay also contains communities that have adapted to the marine setting. Ko Panyi, for example, is a village associated with the park area that is built along the edge of a limestone island, with houses on stilts over the tidal shallows.Park contact details in Ko Panyi sub-district Within the national park boundaries, the combination of inhabited islands, protected mangroves and karst scenery gives Ao Phang Nga a distinctive identity among Thailand’s coastal landscapes.
Visiting Ao Phang Nga: what travellers from Western Europe should know
- Ao Phang Nga lies in Phang Nga Province in southern Thailand, between the mainland and the island of Phuket in the Andaman Sea; access is by boat from piers around Phang Nga Bay.
- Travel through the park is by water, usually in small boats that follow tidal channels between mangroves and around limestone islands, with landings on simple piers or beaches.
- The landscape is low-lying at sea level, but some viewpoints on islands involve walking up stepped paths on uneven rock and soil surfaces with exposed roots.
- The official language is Thai and the currency is the baht. Entry requirements depend on your nationality; UK travellers can check the FCDO travel advice at gov.uk/foreign-travel-advice, Irish travellers the Department of Foreign Affairs at ireland.ie.
Searching for Ao Phang Nga on social platforms
These links open searches for Ao Phang Nga on each platform.Frequently asked questions about Ao Phang Nga
Where is Ao Phang Nga?
Ao Phang Nga is a marine bay and national park in Phang Nga Province in southern Thailand, between the mainland and Phuket in the Andaman Sea.
What should visitors expect on a visit?
Visitors travel by boat through shallow green water, passing limestone islands, mangrove-lined channels and sheltered lagoons, with some landings on beaches or simple piers.
What makes Ao Phang Nga distinctive?
Ao Phang Nga is distinctive for its combination of sheer limestone towers, extensive mangrove forests and protected marine status within a single bay-scale national park.
