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1. 

   Caves

   Furna Dágua

   The Gruta Dágua, on Terceira island, is a cave of volcanic origin. Inside, there are abundant springs of water and it is possible to admire a whole range of lava stalactites.

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2. 

   Caves

   Furna do Enxofre

   The Furna do Enxofre, situated in the south-eastern part of the Caldeira da Ilha Graciosa, is an impressive lava cave, whose main feature is its perfect dome-shaped roof. The inside of the cave is reached via a tower roughly 37 metres high and (...)

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3. 

   Caves

   Grutas da Moeda

   The Grutas da Moeda (the Coin Caves) of São Mamede, Fatima, were discovered in 1971 by two hunters while chasing a fox. Once in the cave, they were overcome with curiosity which led them to explore the area more thoroughly. To their amazement, they (...)

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4. 

   Caves

   Monumento Natural Regional da Gruta das Torres

   The Gruta das Torres, located on the island of Pico at an altitude of 285 metres, is the largest lava tunnel known to exist in the Azores, with a total length of roughly 5150 metres and a maximum height of 15 metres.It consists of a large main (...)

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5. 

   Caves

   Monumento Natural Regional da Gruta do Carvão

   The natural wealth of the Gruta do Carvão lies in its great variety of geological aspects, structures and phenomena that are typically caused by volcanic activity. These features include structures known as "gas bubbles", corresponding to sectors of (...)

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