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Caldera lake near \"Tagus Cove\" directly east of Fernandina Island on the west coast of Isla Isabela as seen during the Scripps Institution of Oceanography's Swan Song Expedition (1961) in the Galápagos Islands chain. 1961.

Caldera lake near \"Tagus Cove\" directly east of Fernandina Island on the west coast of Isla Isabela as seen during the S...