The Blue Grotto is a sea cave on the coast of the island of Capri, southern Italy. Sunlight, passing through an underwater cavity and shining through the seawater, creates a blue reflection that illuminates the cavern.
Welch, Claude Emerson
State University of New York at Buffalo
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Is Part Of
Welch, Claude Emerson, “Blue Grotto,” Digital Collections - University at Buffalo Libraries, accessed November 14, 2018, https://ubdigit.buffalo.edu/items/show/89672.