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.

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.

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.

Get back to nature in the volcanic landscapes of Terceira Island on an approximate 2.5-hour hike along the Mistérios Negros trail. Benefit from pick-up at your hotel in Angra do Heroismo or Praia da Vitória, and then make your way to the start of the trail. Set off on a moderate level circular trek of 5 kilometers to see different landforms created by the ancient lava flows. Encounter small lakes and volcanic domes, along with the Pico Gaspar climb up a volcano that erupted 15,000 years ago. Called Mistérios Negros due to the dark lava rock surrounding the area, the area is not to be missed. Follow the trail through different vegetation, including Japanese cedar, juniper and blueberry plants. Keep a look out for the local birdlife as you fill your lungs with fresh country air.

Fasten your seatbelt and begin your adventure through the interior of the island of Terceira. On this trip, you will be riding in Jeeps suitably equipped for this purpose and able to take you to places you did not even imagine existed. It is intended for those who want to see unusual perspectives and scenarios. You will travel to the interior of the Island in muddy terrain at times and see untouched nature. Sometimes the Jeep might get stuck in the mud at which point you can volunteer to help free the Jeeps from the mud. Have an outdoor lunch (traditional food and Portuguese wine). Then stroll through the interior of the island for some breathtaking views.