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US$ 45.12
2 travellers
What to Expect
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Stop At: Gruta do Natal, Altares, Angra do Heroismo, Terceira 9700-169 Portugal

It is a very extensive geological formation, resulting from the formation of a lava tube inside the island, comprised in the Natural Forest Reserve of the Serra de Santa Bárbara and Mistérios Negros. It has ramifications in the form of different tunnels, formed by the lava flows in different directions. One of its curiosities is the fact that it is located largely beneath a lagoon, the Black Lagoon.

Duration: 30 minutes

Stop At: Furnas do Enxofre, Porto Judeu, Terceira Portugal

They constitute a fumarolic field, that is, in an area that comprises several exits of aggressive volcanic gases, at several temperatures, some quite high (about 95º C at the surface and about 130º C at half a meter deep). Such degassing consists essentially of carbon dioxide (c.95%), hydrogen sulphide (c.3%), sulfur gas, hydrogen, nitrogen, methane and the like, in very low proportions.

Duration: 30 minutes

Stop At: Algar do Carvao, Estrada Algar Do Carvao Center of Island, Terceira Portugal

Discovered in Caldeira Guilherme Moniz, a former dormant volcano, in this Algar visitors can descend to about 100 meters deep, and observe stalactites unique in the world due to their silicate characteristics, and an underground lagoon with crystalline waters. It is classified as Regional Natural Monument.

Duration: 30 minutes
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Reviewed 21 May 2019

My mother and I stumbled across the AcorBus office in Angra and decided to stop in to see what they could offer. Filipe greeted us; he was very friendly and explained all the tours in detail with the costs included. We opted for the Caves...More

Date of experience: May 2019
Thank jacquelinemasc
AzorBusBookings, Bookings at Azorbus City Tours, responded to this reviewResponded 27 May 2019

Hello! It is so rewarding to see that you enjoyed getting to know those sights with us. It was a pleasure meeting you. We hope to see you again, some day! Thank you very much.

Reviewed 14 May 2019

My friend and I stopped in Azorbus City Tour office with some questions. Filipe was extremely knowledgeable and friendly. We signed up for the following day’s half day tour (35 Euros) with the cave and volcano visit (12 Euros additional for these extras). We thoroughly...More

Date of experience: May 2019
1  Thank S2816KTandreab
AzorBusBookings, Bookings at Azorbus City Tours, responded to this reviewResponded 21 May 2019

Hello!! We are very happy that you enjoyed visiting the several sights we showed you. I'm glad to read that you decided to swim in Biscoitos. I'm guessing the water was warmer than yours on the North side.. :) Thank you very much for your...More

Reviewed 26 April 2019 via mobile

We booked this tour expecting it to be just the caves, but it truly was much, much more. Our guides, Felipe, Isabel, and Felipa were incredible; they were extremely knowledgeable and we could tell that they loved talking about Terceira. I felt like we got...More

Date of experience: April 2019
Thank Sarah M
filipeavila79, Gestor at Azorbus City Tours, responded to this reviewResponded 12 May 2019

Hi Sarah, It was so good to receive your review, to hear from you and, especially, that you enjoyed our tour. I hope we meet again and that we have much more to show you and to talk to. It was a pleasure to meet...More

Reviewed 23 April 2019

Phillip and Phillipa is the couple who runs this terrific adventure. Phillipa and Isabella are very knowledgeable guides, Phillip is the co-owner and the bus driver who also gives you interesting details about the island's history and life. Three of them speak very good English....More

Date of experience: April 2019
Thank algim
AzorBusBookings, Director of Sales at Azorbus City Tours, responded to this reviewResponded 23 April 2019

Hello!! Thank you very much for your review. It really was a good day, in spite of the wind. We had a great time with you guys and we're very happy that you did too. Thank you again and hope to hear from you soon!

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14 March 2019|
Response from filipeavila79 | Property representative |
Hello, very sorry for the delay, yes we pick up in Angra do Heroísmo.
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