247 million years ago to present
Diverse topography of Satun Geopark
About 247 million years ago, the collision of 2 tectonic plates continuously uplifted the Satun Geopark seabed into high mountains, which were then weathered by wind and rain elements for millions of years. This resulted in the formation of unique topographic features such as limestone in Thung Wa and Manang districts.
The limestone was dissolved by water and transformed into a special topography called a “terrestrial karst” comprising mountains with sharp blade-like tips, sinkholes, a network of underground water, and large caves such as Phupha Phetch Cave or the longest sea cave in Thailand named the Stegodon Sea Cave, which is full of beautiful speleothems (stalactite and a stalagmite). Moreover, there are sand beaches, gravel beaches, and a natural sea arch that is the tourism symbol of Satun