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 (...)
The Gruta do Natal on Terceira island is considered ideal for enjoying a first contact with the different lava features that are to be found in the Azores, making it possible to enjoy the beauty and novelty that this type of natural phenomenon can (...)
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 (...)
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 (...)
Algar do Carvão is situated in the central area of Terceira island, at an altitude of roughly 550 metres.Previously forming part of a Natural Geological Reserve, the area of Algar do Carvão (roughly 40.5 hectares) was recently reclassified as a (...)
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