Algar do Carvao Natural Reserve cave, Island of Terceira, Azores, Portugal, Atlantic, Europe

Algar do Carvao Natural Reserve cave, Island of Terceira, Azores, Portugal, Atlantic, Europe

Gruta do Algar do Carvao, cave, Terceira Island, Azores, Portugal, Atlantic, Europe

Algar do Carvao Caves, Terceira Island, Azores, Portugal, Europe

Algar do Carvao Caves, Terceira Island, Azores, Portugal, Europe

Algar do Carvao, a volcanic vent and landmark of the island. Island Ilhas Terceira, part of the Azores (Ilhas dos Acores) in the atlantic ocean, an autonomous region of Portugal. Europe, Azores, Portugal.

Algar do Carvao, a volcanic vent and landmark of the island, the entrance for the visitors. Island Ilhas Terceira, part of the Azores (Ilhas dos Acores) in the atlantic ocean, an autonomous region of Portugal. Europe, Azores, Portugal.

Algar do Carvao, a volcanic vent and landmark of the island, the lake in the cave. Island Ilhas Terceira, part of the Azores (Ilhas dos Acores) in the atlantic ocean, an autonomous region of Portugal. Europe, Azores, Portugal.

Algar do Carvao, a volcanic vent and landmark of the island. Island Ilhas Terceira, part of the Azores (Ilhas dos Acores) in the atlantic ocean, an autonomous region of Portugal. Europe, Azores, Portugal.