Tours/Terceira/Private Caves Tour with a Geologist
Viator · Private tour

Private Caves Tour with a Geologist

5.0(15)Terceira1 hour
VIATOR5.0(8)TRIPADVISOR5.0(7)

Description

Visits to Algar do Carvão may be limited due to visitor center works Open (14:00 - 18:00 summer/ 14:30 - 17:30 winter). October to April close Sunday, Monday and Thursday. Have you ever imagined yourself inside a volcano? In this tour, guided by a geologist, we will visit Gruta do Natal (Christmas Cave) and Algar do Carvão. From here in the center of the island, depending on the weather we can choose to taste our famous local cheese while learning some of the region’s history or take a dip in one of our natural ocean pools along the way, bring a towel and a swimsuit. The experience is a fully customizable private tour custom-made according to your personal needs and wishes.

Tour Options

Private Caves Tour with a Geologist
  • Pickup included

Itinerary

Admission not included60 min

Lava tube, the cave spreads horizontally where you one can see small detailed lava forms. Some low ceiling areas that require care, so not recommended for those with mobility issues.

30 min

Ground steaming area with sulfur vents, there is a small circular walking path to best view the unique flora and geology of the area.

Admission not included60 min

Volcanic chimney, the cave spreads mostly vertically. One can appreciate the monumental wide rooms.

60 min

Rocky beach area from where you can see the southwest coast and, if the weather allows, São Jorge and Pico Islands.

Pass by

Important Note- The remaining (Hours) will be allotted for the travel time from pick up until drop off.

Highlights

Private transportation
Hotel Pick up and drop off
Geologist expert guide

What's included

Included
Private transportation
Hotel Pick up and drop off
Geologist expert guide
Not included
Snacks
Infant's car seats
Entrance Fee to Gruta do Natal - €9.00 (combo ticket €15.00 per person)
Entrance Fee to Algar do Carvão - €10.00 (combo ticket €15.00 per person)

Pickup Locations & Times

We will pick you up at your hotel in Angra or at the meeting point, main square (Praça Velha) just in front of the city hall.

Traveller Ratings

5.0
15 reviews
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15
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Important Information

  • Service animals allowed
  • Infants are required to sit on an adult’s lap
  • Not recommended for travelers with spinal injuries
  • Not recommended for travelers with poor cardiovascular health
  • Travelers should have at least a moderate level of physical fitness

Reviews(15)

D
Daydream17E
May 31, 2026
Highlight of our trip to Terceira!

What a day! Each of the sites we visited with Ricardo—Gruta do Natal, Algar Do Carvao, and Furnas do Enxofre—was fascinating and astonishing beautiful. But to have a geologist explain the wonders we were seeing took our experience to a whole different level. Ricardo also offered a kind and steadying hand as we two older women made our way along wet, slippery paths and ducked under volcanic structures. Obrigado, Ricardo!

Operator response

Thank you for your kind words!

M
Matt W
May 27, 2026
Great guy, great value, super fun

Ricardo was very knowledgeable, friendly, and made sure to take his time explaining all the various rock formations. Super cool! It was well worth it, highly recommend.

Operator response

Thank you!

B
beverlymK2008WW
May 20, 2026
Fantastic Tour of Lava Tunnels With Geologist

Ricardo was an excellent tour guide. He was knowledgeable about geology, creative, and very patient with our questions. I highly recommend Ricardo if you want to do a deeper dive about the geological formations of Terceira.

Operator response

Thank you 🙏🏼

S
Sidney_B
May 19, 2026
Amazing geologist tour

Having Ricardo as our guide took this tour from good to excellent. He was patient and thoughtful. He allowed us to go at our own pace but was there to answer any questions. He added invaluable information and insight, we never could have had if we not had an experience geologist to guide us. I would also recommend bringing a raincoat and wearing grippy closed toed shoes. There are a lot of stairs and uneven ground but doable even for my 63 year old mother.

Operator response

Thank you 🙏🏼

A
alan_c
September 24, 2025
Very professional and genuine

We are adventurous and this was our first trip to the Azores. Ricardo picked us up at the square in Angra do Heroismo. The big cave is closed temporarily for upgrades so he suggested some other activities and left it to us to decide. We went inside lava tubes at Christmas cave and also visited an area with multiple fumaroles. As scientists we knew right away talking with him that he was very knowledgeable. Ricardo says he's from the mainland, and fell in love with Terceira when he was completing exploration work for the geothermal power station that now supplies a percentage of Terceira's electricity. He showed us the outside of the geothermal plant and explained how they use the steam and water to generate electricity. He decided to come back to Terceira after working there. We have met people like Ricardo while traveling before, and he smiled widely when we mentioned some people decide to relocate because they fall in love with a certain location and way of life. Ricardo fits this profile. We spent the last hour enjoying local cheeses in a cantina overlooking the ocean and chatting about travelling. Ricardo's parting advise was to try the fish soup at a restaurant at our last stop, Sao Miguel Island. It was magnificent advise! Overall, it was an amazing time and we felt like we made a new friend. Thank you, Ricardo!

Operator response

Thank you so much for your kind words! I hope to see you again when the Algar do Carvão cave is open.

I
Ivy_G
July 23, 2025
Great tour experience

Ricardo was very knowledgeable and an excellent guide. The tour was easy for our 8 and 10 year olds to also enjoy. Don’t miss this opportunity while staying in Terceira.

Operator response

It was such a rewarding experience doing the tour with your kids! It was such a lovely day. Thank you!

S
Szalka22
May 28, 2025
great time :)

Ricardo was kind, knowledgeable and relaxed and made us feel very welcome. His geologist’s perspective was very enriching for our experience of visiting the island. Highly recommend. :)

V
Vicente_L
September 25, 2024
Wonderful in depth tour of the caves

It was a wonderful tour. We enjoyed it a lot, and the guide was very knowledgeable and friendly. The two caves are definitely a must in Terceira, and the Algar do Carvão was breathtaking.

1 people found this helpful
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Joanne_A
September 21, 2024
Best trip

Best trip of our visit to Terceira! Great communication re Hotel pick up . Having Ricardo as our guide meant that we really got the best out of our visits to Gruta do Natal and Algar do Carvão. Having the features explained and been shown what to look for made the experience soo much more interesting. We loved it . We got to see the island with someone who was great who explained the area and also had a fabulous stop for local wine and cheese. What a great experience!

J
J5287UJlizb
August 27, 2024
Perfect tour! Highly recommend!

This tour is a must! Ricardo is a wonderful and knowledgeable guide (and he takes great photos too!) Beyond the views, I learned a lot about lava formations and other little geology tidbits. The trip to the caves with Ricardo feel personal and special versus a larger group tour. I have already told all my friends (and my mom) they have to do this when they visit Terceira!

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