About Ko Khao Yai
Ko Khao Yai is an uninhabited coastal island in Pak Nam Subdistrict, La-ngu District, Satun Province, southern Thailand. Located in the Andaman Sea within Mu Ko Phetra National Park, it is notable for its limestone cliffs, white sandy beaches, and the distinctive natural rock formation Prasat Hin Panyot. The island is visited by boat from Pak Bara Pier and is known for clear water, snorkeling and scenic coastal landscapes.
Visitors guide
Visitors can expect an undeveloped island with limestone karst cliffs, small white-sand beaches and clear turquoise water. The main feature is Prasat Hin Panyot, a castle-like sea stack and natural stone arch accessible by boat. There are no permanent settlements or shops on the island. Exploration is limited to beach areas, viewpoints and shallow water for swimming and snorkeling, typically as part of a half-day island-hopping boat tour from Pak Bara.
Key highlights
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Prasat Hin Panyot - natural limestone castle and stone arch sea stack
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White sandy beaches with clear Andaman Sea water
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Limestone cliffs and karst scenery
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Snorkeling and swimming in shallow coastal waters
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Uninhabited island landscape within Mu Ko Phetra National Park
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Boat tour and photography opportunities around the island
History of Ko Khao Yai
Ko Khao Yai is part of Mu Ko Phetra National Park, established on 31 December 1984 as Thailand's 49th national park, protecting islands and coastline along Satun and Trang provinces in the Andaman Sea.
Route
| By road | Travel by road to Pak Bara Pier in Pak Nam, La-ngu District; pier is the main departure point for boats to Ko Khao Yai |
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| By public transport |