Caldeira e Furna do Enxofre
GRA 1
39º 01'34''N 27º 58'25''W
“Caldeira” is a collapse caldera emplaced on the top of the smallest polygenetic volcano of Azores, which occupies the SE sector of Graciosa island. Inside the depression is located “Furna do Enxofre”, a 40 m high domeshaped volcanic cave, unique worldwide, enclosing a mud-poll fumarole and a lake.
