Cotopaxi volcano national park near Latacunga, Cotopaxi, Ecuador
Cuicocha lagoon inside the crater of the volcano Cotacachi, Ecuador
Algae bloom in Taal lake - the smallest in the world volcano, Manila, Philippines
Toliman volcano, lake Lago de Atitlán, Guatemala
Rust-colored volcanic tuff cliffs of Brown Bluff, Tabarin Peninsula, Antarctica
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