The cooling of the lava and the escape of volcanic gases caused the appearance of cavities that take the form of grottoes covered with volcanic stalactites and stalagmites or long corridors stretching into the depths of the earth. Deserving a visit, accompanied by a guide and suitable equipment, are the caverns (furnas) called Frei Matias (connected with the legend of a hermit), Silveira (with long galleries) and Montanheiros.
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Açores - Azores - São Miguel - Furnas , originally uploaded by Luis Miguens .
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Impressive group of lavas next to the sea, perforated by many grottoes and tunnels. Volcanic arches over the sea. Rocks with curious shapes,... -
Terceira Island ( Portuguese: Ilha Terceira) is an island in the Azores, in the middle of the North Atlantic Ocean, with an area of 396.75 k...
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