View from Miradouro Boca do Inferno to Sete Citades, Azores, PortugalVolcano crater islet of Vila Franca do Campo at São Miguel island, Azores, PortugalCuicocha lagoon inside the crater of the volcano Cotacachi, Ecuador
Algae bloom in Taal lake - the smallest in the world volcano, Manila, PhilippinesCrater Lake Nyabikere (Lake of frogs) in Kabarole district, Uganda
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