Lake in the Furna do Enxofre, volcanic cave, Caldeira, Graciosa Natural Park, Graciosa Island, Azores, Portugal, Atlantic, Europe

travel destination photography horizontal colour image europe outdoors no people portugal portuguese culture day atlantic azores graciosa island furna do enxofre volcanic terrain cave caldeira graciosa natural park lake boat moored water reflection rock rock formation geology water's edge colour color image color outside tourist destination travel nobody no one no one reflecting reflected typically portuguese traditional culture tradition traditional traditionally portuguese portuguese european