It is common to find ordered rows of markings, notches, and other signs in caves. They are not all lunar calendars such as those noted in this entry. We do well to remember that the coastal caves in many parts of the gulf of Naples, with very few exceptions, are man-made. That is to say that they were quarried to provide building material for nearby construction on land. The image (right) was taken by Selene Salvi of Napoli Underground within the Grotta del Tuono [Thunder Grotto] at water's edge of...
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