Ko Khao Yai (Big Hill Island)

Ko Khao Yai, part of Petra Islands National Park, lies to the west of Pak Bara Pier. Admired from afar, the shape of the island resembles a stone castle. At one end of the island is a natural stone gate which juts into the sea where a small boat can pass through. The area is where the Satun Aquaculture Office is located. On the other side of the island is a large U-shaped bay 700 meters wide. During the low tide, a cluster of corals can be seen parallel with the shores. The waters around the gulf are calm all year round;pearls are cultured here. Tourists can also visit the pearl culture farms. Koh khao Yai can be reached by various means of transportation; however, the most convenient way is to take a boat from Pak Bara Pier.