• Algar do Carvao - Algar do Carvaão Natural Reserve

The great eruption, known as the Pico Alto, which occurred north of the existing Guilherme Moniz volcanic apparatus, poured its lavas from a great distance. Later, a new eruption, this time basaltic, tore the ground and initiated a process that would lead to the formation of a stromboliano volcano ‘ the Peak of the Coal. In a first phase, by forcing and trying to break the existing trachytic effusion, which constituted a natural barrier of little consistency, it formed the zone of the lagoon and the two vaults on it. Later, in a new attempt of evasion, the basaltic lavas, they broke more to the side the current chimney, leaving to the outside. In its final phase the magma descended into the deepest conduits and the magma chamber, giving rise, this almost instantaneous absence of magma, to the formation of the Algar proper. Very effusive lava spills produced very flowing acidic lava rivers that charred existing vegetation. The dating of one of the fossils then formed gives the Algar do Carvão an age of 2148 (+ or-115 years).

• Climate-controlled vehicle interiors for your comfort

• Gratuities

Embark on a half-day expedition across Terceira Island, offering you a chance to explore both its coasts. Our journey begins at Monte Brasil, providing a stunning panoramic view of Angra do Heroísmo city and its twin bays. We then move to Algar do Carvão, where you’ll experience the awe of a volcanic cave. Prepare to be stunned at our next destination, the sulphur fumaroles at Furnas do Enxofre. A short 30-minute trip will bring us to Biscoitos, featuring natural pools nestled among the intriguing black rock formations created by volcanic eruptions. Additionally, Biscoitos is a renowned viticulture region, renowned for producing the acclaimed verdelho wine of the Azores.

For a full refund, cancel at least 24 hours before the scheduled departure time.