The genesis of the Azores is found upon 1766 volcanoes, nine of which are still dormant. Underground, almost three hundred volcanic cavities, including caves, ravines and cracks, have been surveyed. The landscape is filled with dry calderas, craters lakes, fumaroles and thermal water springs. In the sea, there are submarine geothermal springs. The mountain of Pico, majestic and with an intact cone, appears to be protecting all this geological wealth. The volcanism of the archipelago impresses for its diversity and creates its own magnetism. It is a witness to the power of Nature, and the basis for very special experiences.

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LAGOA DAS SETE CIDADES - São Miguel
One of the biggest crater lakes of the island of São Miguel, it stands out for the different colours of its waters, divided into the so-called blue and green lakes. This place is filled with interesting legends. The crater of Sete Cidades is five kilometres wide and is surrounded by cliffs that can reach an altitude of 500 metres.
CALDEIRA VELHA - São Miguel
On the way up to Lagoa do Fogo, between the red of the earth and the green of the vegetation, Caldeira Velha provides a well deserved rest. A waterfall with warm water invites you for a dip. The iron-rich water flows over rocks, leaving behind a brownish colouring, and then falls into a small lake.
PARQUE TERRA NOSTRA - São Miguel
An age-old garden, it is filled with lakes and thermal-water streams. Its enormous pool is famous for its hot brown-coloured water, rich in iron. The temperature of the water is pleasant at any time of the year
CAPELINHOS - Faial
At the westernmost point of the island of Faial, the Capelinhos Volcano majestically rises up to the sky, as the witness to the last volcanic eruption that took place in the Azores and that added new land to the existing one. Entering this area is like landing on the moon, with the grey volcanic ash and lapilli tossed out between 1957 and 1958 starting to be invaded by green vegetation, which is determined to colonize this new territory. In the abrupt cliffs of Capelinhos and Costado da Nau, one can see the inside of these volcanoes in a sequence of contrasting rocks, layers and contours and in a game of surprising colours and textures
GRUTA DAS TORRES LAVA TUBE - Pico
The longest lava tube known in the Azores, this cave is 5,150 meters-long and 15 meters wide at its widest point. It is rich in geological formations, such as stalactites and stalagmites, lava balls, solidified lateral flows, and it is possible to find different types of lava in the ground. Silica Oxides cover some areas of the walls. Most of the galleries of the cave are in a very good state of preservation.

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