Get back to nature and visit the extraordinary lava tube of Algar do Carvão inside the caldera of the Guilherme Moniz volcano, 12 kilometers from Angra do Heroísmo. Travel back in time to when a basalt eruption tore a pre-existing lava flow to begin the process that would lead to the formation of a Strombolian volcano with 2 cones. Observe different geological features, including ferrous deposits and silicate stalactites, and appreciate formations that date back to the origins of the cave. Discover a small pond of rare beauty, and gaze in awe as smoke emerges from the ground. Encounter the unique flora and fauna, including birds that seek refuge inside the cave, and diverse plant life that includes species of molds, arthropods, and other groups.

Meet your driver at your accommodation in Angra do Heroísmo, Praia da Vitoria, or Lajes, and start your half-day tour in an air-conditioned minivan. Explore Algar do Carvão, an empty volcano and its caves with remarkable unique mineralogical characteristics. The 90-meter-deep volcanic chimney formed approximately 3,200 years ago after the magma drained from the main chimney receding to the magma chamber. Next up is Furnas do Enxofre. Walk around a fumaroles field and see sulfur gas coming out from the ground. Contemplate the beautiful natural swimming pool at Biscoitos, surrounded by black lava and with a few colorful fishing boats anchored alongside. Stop for a photo opportunity in Miradouro do Raminho and see 3 islands. Finish a wonderful day with a handmade delicious cheese tasting.

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.

Start the tour by visiting Monte Brasil, where you can see the Fortress of São João Baptista, built by the Spanish during their conquest of the Azores. Enjoy fantastic views of the UNESCO World Heritage City of Angra do Heroísmo. Proceed along the southeast of Terceira Island towards the villages of Ribeirinha, Feteira, and São Sebastião. See beautiful natural landmarks such as Serra da Ribeirinha and the Ilhéus das Cabras, culminating in a visit to the island's oldest church. Next, stop at Serra do Cume, a viewpoint located in Terceira's largest "caldeira". Observe the vast expanse of agricultural fields spread out the island. Enjoy some free time in the charming town of Praia da Vitória. Continue along the northern coast of the island and visit the Biscoitos Natural Swimming Pools. Have an optional visit to Algar do Carvão, an empty volcanic chimney, and Gruta do Natal (lava tube) which take about 30-40 minutes each. The tour is concluded by visiting the Queijo Vaquinha Cheese Factory and São Mateus Fishing Port with drop-off back at your accommodation.

Discover the best of Terceira Island on a guided full-day trip from Angra do Heroísmo. Get picked up and dropped off from your hotel in Angra. The first stop is Monte Brasil, where you can see Angra do Heroísmo from above. Go for a short drive through the city, and then along the southeast coast to the village of Ribeirinha where you can admire panoramic views. Go offroad as you explore the villages of Agualva and Biscoitos, and observe wild bulls in their natural habitat as well as a diverse array of native flora. Have a short break for lunch, then continue on to discover inactive volcanic tubes and chimneys including Algar do Carvao and Christmas cave, which you can see from the inside. Finish the tour with a visit to Queijo Vaquinha Cheese Factory and the Fishing Port of São Mateus village, before being dropped back off at 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.

Experience the natural attractions of Terceira island on this private full-day tour. Visit the various viewpoints, peaks, mountains and volcanoes and marvel at the ever-changing landscape. Get recommendations on dining and where to buy local products. Discover the many natural pools and beaches and stop to take a dip. Drive to fishing ports and hear the fascinating whaling stories. Snap photos of the fortresses and lighthouses that decorate the island. Admire the volcanic caves and fumaroles. Watch the landscape change to delightful greens, woods, and endless pastures where cows, and wild cattle are abundant. Witness pastoral scenes of farmers taking care of the animals. See where volcanic wine is produced. Learn about the culture and traditions from a local. Hear about Divino Espírito Santo festivities, traditional street bullfights, and the unique way of experiencing carnival, as well as the typical summer festivals.

The guide will pick up all travelers from their accommodation. After leaving the accommodation, the guide will take all travelers to the desired trail. There are several options: 1. Rocha do Chambre Walking Trail: See a big part of the island's interior, walking through one of Terceira's most important volcanos. It is categorized as being of medium dificulty, with an extension of 8.8 km (5.47 miles), with an average duration of 3.5 hours. 2. Mistérios Negros Walking Trail: Walk alongside several endemic species, visit small lakes and walk on lava. All this is possible in the Mistérios Negros trail, it is categorized as hard, with an extension of 4.9 km (3.04 miles), with a duration of around 3.5 hours. 3. Baías da Agualva: A trail mostly focusing on the sea, walk the coast of the village of Agualva, seeing volcanic formations and endemic species like Erica Azorica. It is categorized as easy, with an extension of 3.8 km (2.36 miles), with an average duration of 3 hours. 4. Forts of São Sebastião: A walking trail that passes by several fortifications from before the spanish invasions of Terceira Island, a real walk through history! It is categorized as easy, with an extension of 5.7 km (3.54 miles), with an average duration of 3.5 hours. 5. Serreta: This is a circular trail with an extension of 6.8 km, the average completion time is around 3.5 hours. In this trail it is possible to see traces of volcanic activity and endemic species. 6. Bestas: This is a circular trail with an extension of 4 km, the average completion time is around 3 hours. In this trail it is possible to see printed on the floor, the old oxcart tracks known as Passagem das Bestas, as well as several endemic species. 7. Monte Brasil: This is a circular trail with an extension of 7.4 km, the average completion time is around 3.5 hours. In this trail takes place in Monte Brasil, surrounded by a Spanish fortress. It is possible to see several endemic species of plants. The guide will drop off all visitors in their chosen accommodations after the tour.

Admire Terceira's top highlights on a bus tour that takes away the hassle of planning and deciding. Listen to your driver/guide's insightful commentary, learning about the significance and history of every stop on your route. Sit back and relax between several locations, watching the verdant landscape rush past. Start your tour by visiting the lush peninsula of Monte Brasil — most of which is a natural reserve. See the long-extinct volcano looming above you before heading to the nearby colorful town of Angra do Heroísmo. Marvel at the beauty and rich history of the Angra do Heroísmo — Terceira's capital and largest city, with its town center listed as a UNESCO World Heritage Site. Next, head to the south-east coast of the island, seeing several charming churches, holy spirit chapels, and natural formations along the way. Then, stop at the high Serra do Cume viewpoint, where you'll see one of the most breathtaking views of Terceira Island known as The Patchwork Quilt. Surrounding the hill are rolling green hills and hundreds of patches of farmland, creating a patchwork quilt formation. Round off your visit with a stop at the city of Praia da Vitória, filled with sandy beaches and several stunning viewpoints. Known for its colorful architecture, this quaint town still has its old city walls and has a sandy beach alongside its marina.

Discover the most famous and fascinating sights of the island of Terceira on a full-day bus tour. Sit back and travel comfortably with your group and travel the interior of the island with a professional guide. Get picked up from your accommodation and embark on an adventure towards the first spot of the tour. Visit the famous Monte Brasil, an inactive volcano close to the city. Enjoy fantastic views of the UNESCO World Heritage City of Angra do Heroísmo.  Head towards the southeast coast of the island towards some famous villages. See beautiful natural landmarks like the churches, holy spirit chapels, and other natural formations.  Next, stop at Serra do Cume, a viewpoint located in Terceira's largest caldera. Observe the vast expanse of agricultural fields spread out the island. Get mesmerized by the most breathtaking panoramic views of Terceira Island.  The final stop in the morning is the city of Praia da Vitória. Spend some time on this spot and explore the sandy beaches and many viewpoints. Take a short lunch break before leaving for the next stop.  Continue along the northern coast to visit the Algar do Carvão, an empty volcanic chimney, and the Gruta do Natal a lava tube. Stroll through the interior of the area for some fantastic views. Finally, take a tour of the village of São Mateus, the main fishing port of the island. Finish a wonderful day at one of the most beautiful islands of Portugal.