Ãgua de Pau (volcano)
The Agua de Pau is a stratovolcano in the center of the Azores island of Sao Miguel.
Its height is 947 m. The volcano is dominated by two calderas, one external, 4 x 7 km caldera measured, which was about 30,000 to 45,000 years ago before, as well as an interior, 2.5 x 3 km caldera measured, which probably originated about 15,000 years ago. The younger of the two calderas is partially filled by the lake Lagoa do Fogo. There are several lava domes on the northern and western flank of the volcano. About 5,000 years ago the Plinian ash deposition " Fogo -A" was formed with a volume of 3 cubic kilometers in the strongest known eruption in the Azores archipelago. Numerous cinder cones indicate radial and concentric columns. Some of these cones were still active in historic times. The last trachytic explosive eruption occurred 1563rd are located on the northwestern edge of some major hot springs.