Caldeira do vulcão das Furnas
SMG 1
37º 45'45''N 25º 18'58''W
Furnas volcano is a silicic polygenetic volcano with a summit calderas complex, the older with 8×5.6 km diameter and aged about 34,000 years. The geodiversity associated includes a volcanic lake, domes and tuff rings, and a diversified hydrothermal system, with fumaroles, thermal and mineral waters.
