Caldeira de Santa Bárbara e Mistérios Negros
TER 2
38º 44'28''N 27º 18'51''W
The “Santa Bárbara” stratovolcano is truncated by a 2.7×1.9 km collapse calderas complex, the younger being almost filled-up by 7 trachytic domes. On its flanks there are several volcano-tectonic lineaments of trachytic lava flows (designated as coulées) and domes (often with obsidian), like the “Mistérios Negros” of the 1761 eruption.