Discover the volcanos and volcanic caves of Terceira Island on this geology lover's guided tour. Visit Algar do Carvão, Furnas do Enxofre and Gruta do Natal with an expert guide. Meet your guide and driver for pick-up at your hotel and head to the first stop on the tour — the inactive Algar do Carvão. Visit it from the inside and discover its small lake and fascinating geological formations. Next head to Furnas do Enxofre, a small strip of land with 20 fumaroles expelling white vapor into the air. You'll also see native flora like the Azores juniper and the Azores blueberry. Top off your tour with a visit to Gruta do Natal (Christmas Cave), a system of caves known as a lava tube, full of spectacular volcanic formations.

Have you ever imagined visiting the womb of the earth? Well, by choosing this tour, that is precisely what you will do, discovering the most emblematic Volcanic Cavities on Terceira Island. We leave Angra do Heroísmo towards Lagoa das Patas, we visit the leisure park, the lagoon and the stream, in the company of the ducks. Then we go to Gruta do Natal, we visit the lava tube where it is necessary to wear a helmet. We head further inland where we stop to visit the sulfur caves. A short 10-minute walk through nature, admiring the earth's breathing. As the best is always for last, it's time to visit the Regional Natural Monument of Algar do Carvão, undoubtedly the ex-libris of Terceira Island. Glimpse, feel and experience nature in its purest state!

The Tour starts by picking you from your hotel in Angra do Heroismo and going to the center of the island to a zone insert in the Natural Park of Terceira Island. It´s a hard difficulty walking trail with an extention of 5 kms, that has as one of the highlighs Lagoa do Negro, located exactely in front of Gruta do Natal´s support house. You´ll also pass on some magical places fill with endemical trees and small lakes who are known as the Lagoinha do Vale Fundo. By continuing the track you will pass on some vulcanic formations and you´ll get to know why this area is called Misterios Negros. Since it´s a circular trail, the tour ends in the same starting point where you´ll be brought back to your hotel.

The Tour starts by the Afternoon where you´ll be Picked up from your hotel and then you´ll go to the center of Terceira Island. On this tour you´re going to see a lot of secret spots known by the locals. You´ll visit an inside of a Lava Tube with 700m of extention. The Tour ends at Algar do Carvão, wich is Vulcano that you can actualy visit the inside.