Mu Ko Phetra National Park
Mu Ko Phetra National Park is a marine national park spanning the Andaman Sea coastline of Satun and Trang provinces, with its headquarters at Pak Bara in La-ngu District, Satun. Established on 31 December 1984 as Thailand's 49th national park, it covers about 494 sq km of islands, limestone cliffs, beaches and mangroves. It is notable for undeveloped islands, the stone castle of Prasat Hin Panyot, and snorkeling reefs.