Algar do Carvão
A 90 metre-deep volcanic chimney formed approximately 3,200 years ago after the magma drained from the main chimney receding to the magma chamber.
![](https://visitazores.com/storage/media/2022/02/media-vsobye.jpg)
A 90 metre-deep volcanic chimney formed approximately 3,200 years ago after the magma drained from the main chimney receding to the magma chamber.