Տո Սուա, Volcanic lake in Atua, Samoa
Tō Sua is a crater lake in Atua where the water connects to the Pacific Ocean through underground channels. The water reaches approximately 30 meters deep and reveals the volcanic origins of this landscape.
The lake formed through ancient volcanic activity on Upolu Island long ago. This geological process created the deep depression that filled with seawater over time.
The name To Sua means "big hole" in Samoan, describing the 30-metre-deep volcanic pit that holds the water. The site lies between the villages of Lotofaga and Vavau on Upolu's southern coast, and it is a local landmark and a popular tourist spot.
Access to the water happens down a long wooden ladder that descends steeply into the crater. Swimming is possible but requires awareness of tide times and safety conditions.
The water level stays constant through natural underground tunnels that link directly to the Pacific Ocean. This hidden water exchange happens continuously without the lake ever overflowing.
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