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9 wondrous water caves

Piula Cave Pool

Photo: Stephen Glauser

10 of 11

Piula Cave Pool

Formed by cooled lava tubes, this natural freshwater spring that flows from a cave into the sea is a favorite swimming destination for locals and visitors of the north coast of Samoa's Upolu Island.

The Piula Theolological College, which charges a small visitor's fee, is located nearby, and offers the use of changing rooms and fales (a kind of Samoan shelter) to all visitors.