Algar do Carvão Natural Reserve

Explore the breathtaking Algar do Carvão, a volcanic chimney and one of the most fascinating geological wonders of the Azores. Located in the heart of Terceira Island, this Natural Monument allows visitors to step inside an ancient lava tube formed over 3,000 years ago. Descend into a world of stalactites, stalagmites, and shimmering underground lakes, surrounded by moss-covered rock formations that create a magical, otherworldly atmosphere. The cave’s name, meaning “Coal Pit,” reflects its dark volcanic walls, which contrast beautifully with the vibrant green vegetation illuminated by natural light filtering from above. A must-see destination for nature lovers, hikers, and photography enthusiasts.