Discovering Capri’s Blue Grotto: History, Mystery and Ocean Secrets
The Blue Grotto on Capri is a karst sea cave famed for its luminous azure waters and dramatic low entrance. This guide covers its Roman-era history and 19th-century rediscovery, explains the geological and optical causes of the color, and gives practical planning details — departures, hours, costs, what to expect on the boat transfer, photography tips and alternatives if the grotto is closed.