Caldera Haleakalā National Park volcanic landscape, Maui Island, Hawaii, USA
Cuicocha lagoon inside the crater of the volcano Cotacachi, Ecuador
Boca do Inferno, Lagoa Azul and Lagoa Verde lakes, Sete Cidades, San Miguel, Azores, Portugal
View of lake of the Quilotoa caldera, Andes, Ecuador
Cuicocha caldera and crater lake at the foot of Cotacachi Volcano, Andes, Ecuador
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