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The 268-acre (108-hectare) complex is most famous for its cave tour!

Known for its soaring interiors, million-year-old stalactites and stalagmites, and namesake underground river, Rio Camuy Cave Park (Parque Nacional de las Cavernas del Río Camuy) in Puerto Rico attracts nature lovers and casual visitors alike.

Three crater-like sinkholes and one cave are open to the public at Rio Camuy Cave, the third largest underground river cavern system in the world. Easily accessible from San Juan, a park ranger–led tour of the caves offers insight into the geological history and ecosystem of the area and builds in time to listen as the Camuy River rushes past.

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