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. The cave extends some 50 metres into the cliff at the surface, and is about 150 metres (490 ft) deep, with a sandy bottom.
| Y/M/D | Person | Association | Description | Composition | Food | Event |
|---|---|---|---|---|---|---|
| Y/M/D | Person | Association | Description | Composition | Food | Event |
| 1869/00/00 | Mark Twain | Visitor | Mark Twain visits the Blue Grotto, writing about the sea cave in his book, "The Innocents Abroad". | The Innocents Abroad |
| Particulars for The Blue Grotto: | |
|---|---|
| Locale Attribute | Coastal |
| Physiographic Feature | Natural Cave |
| Sight Category | Terrestrial Feature |
| Historic Use | Underwater |
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