Caldeirinha Pêro Botelho

This algar, also known as Algar dos Diabretes, located in Serra Branca, is easily accessible, and it is possible to get around its entire crater. However, among all the caves on the island of Graciosa, it is currently the only one that needs climbing equipment and qualified personnel to be able to access its interior. "Os Montanheiros" descended and explored this algar for the first time in 1964.