Scenic islet of Vila Franca with its round crater lagoon in Azores, aerial

vila franca islet azores portuguese archipelago sao miguel crater lagoon atlantic phreatomagmatic important bird area scenic protected nature reserve azure circular marine bird habitat ilheu de vila franca submerged volcano vila franca do campo circular crater nature reserve portugal azores tourism geological formations portuguese boquete farilhao tourism geology surtseyan volcanic cone seascape island explore azores sightseeing azores attractions drone aerial nature volcanic travel outdoors pristine uninhabited round ocean marine blue birdseye view