The name 'Khao Sam Roi Yot' translates to 'Mountain of 300 Peaks'.
The park is the site of Thailand's largest freshwater marsh, the Thung Sam Roi Yot Wetland.
Kuha Karuhas Pavilion is a rare example of a four-gabled pavilion constructed within a natural cave environment.
The park provides habitat for the rare Indochinese serow, a goat-antelope species native to Southeast Asia.
The park's limestone geology was formed by sediment accumulation in a shallow tropical sea approximately 280 million years ago.
The marshy areas function as a natural filtration system for the surrounding coastal waters.
Khao Sam Roi Yot National Park is Thailand's first marine national park, covering approximately 98 square kilometers of limestone mountains and coastal wetlands. The park is most famous for the Phraya Nakhon Cave, which houses the iconic Kuha Karuhas Pavilion built for King Chulalongkorn in 1890. The landscape features rugged limestone karsts rising abruptly from the sea, extensive mangrove forests, and freshwater marshes. Visitors can explore a network of hiking trails and limestone caves or traverse the wetlands via elevated boardwalks. The region is a significant site for birdwatching, hosting migratory species during the winter months. Accessible via boat from Bang Pu Beach, the cave is characterized by a central chamber with an open ceiling that allows a shaft of sunlight to illuminate the pavilion. The park maintains protected status as a RAMSAR site due to its critical wetland ecosystem.
The interior of the Phraya Nakhon Cave when the morning sunlight strikes the Kuha Karuhas Pavilion.
Wear sturdy footwear with good grip, as the trail to Phraya Nakhon Cave involves steep, uneven limestone steps.
Carry plenty of drinking water and sun protection, as the trail has limited shade.
Hire a local boat operator at Bang Pu village to reach the cave entrance, which saves several kilometers of rugged trekking.
Attempting the hike to the cave during extreme high-noon heat or ignoring posted signs regarding trail safety and protected wildlife areas.
Some boat services may be suspended during periods of strong monsoon winds.
Dress modestly as a sign of respect, especially when visiting the pavilion; maintain a quiet volume within the cave to avoid disturbing the ecosystem.
