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Geo tour - full day


This tour will take you to many geologically fascinating places around São Miguel island. It is perfect for nature enthusiasts and people curious about the wonders of mother nature.

During this tour, you will learn so much about the volcanic origins of the Azores! It is so interesting to know what Mother Nature can do without human intervention. We will begin the day by picking you up in Ponta Delgada at 9 am, then head to our first activity: a guided visit to Gruta do Carvão (which can be translated as the Coal Cave). Located in the western part of Ponta Delgada, this lava tunnel currently extends for about 2,500 meters (6,500 feet), divided into three main cavities. According to ancient documents and field observations, this lava tunnel indicates a much larger dimension than the one currently known, reaching an estimated length of 5 km (3 miles).

After the visit to the Gruta, we will continue along the South Coast with a stop at the São Roque Islet, also known as Rosto do Cão (“the dog’s face), then head towards the city of Lagoa to visit the Volcanological and Geothermal Observatory of the Azores (OVGA) where you will learn more about the formation of the islands and the volcanic phenomena of the Azores Lunch will be at a local restaurant to taste some Azorean culinary specialties before going back to our trip. After lunch, we will head to the North Coast and climb Pico da Barrosa, with extraordinary views over the volcanic complex of Lagoa do Fogo.

Then, we will stop at the Belvedere of Fogo lake which offers breathtaking views on Fogo volcano and its beautiful lagoon. Then, we will continue towards Caldeira Velha, an iron-rich waterfall which is naturally warmed by the geothermal activity. There, you can enjoy a relaxing thermal bath surrounded by a lush forest. After this invigorating experience, we will keep the beautiful spots coming with a visit to the Caldeiras of Ribeira Grande, where you can truly see a proof of the present volcanic activity. On the way back to Ponta Delgada, we will make a final stop at Ribeira Seca to visit the fountain of Largo de São Pedro, built during the 16th century. This is a unique vestige of the old settlement that was destroyed by the eruption of 1563.

The price for this activity is 85€ per adult (from 13 years old), 42,5€ per child (6-12), free of charge for the youngest (0-5 years old).



Gruta do Carvão, Volcano-logical and Geothermal Observatory of the Azores, Pico da Barrosa, Lagoa do Fogo, Caldeira Velha, Caldeiras of Ribeira grande, Ribeira Seca.


Bring: comfortable light clothes, sturdy hiking shoes, sweater, raincoat, swimsuit, a towel, a hat, backpack, water.


Lunch in a local restaurant.

Frequently Asked Questions

Q: Are the entrance fees of Gruta do Carvão, OVGA, Caldeira Velha and the bill of the lunch already included in the price of the tour?
A: Yes, all you have to pay is the price indicated on this page, every other necessary expense is included in the price.

Q: What is the water temperature at Caldeira Velha?
A: All year round, the water is naturally warmed at around 26°C (79°F).

Q: I am claustrophobic, is the guided visit to Gruta do Carvão really technical?
A: The guided visit into the cave will be approximately 30-40 minutes, covering about 200m of the lava tunnel with a guide. In this short visit, you will stay relatively close to the entrance of the cave (maximum 200m), and there will be no very technical parts during the exploration.

Q: I am allergic to some food, how do I know the lunch will be adapted to my needs?
A: If you have any food restriction, please let us know at least 48h prior to the tour so we can inform the restaurant.


Price per adult


Price per child

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This program includes
  • – Nature guide;
  • – Guided visit of Gruta do Carvão;
  • – Guided visit to the Volcanological and Geothermal Observatory of the Azores
  • – Lunch in a local restaurant
  • – Entrance fee to Caldeira Velha
  • – Pick up and Drop off at your hotel in Ponta Delgada or at the tourist office
  • – Insurance (personal accident and liability)
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