Grottos are caves and they come in many shapes, colours and forms: Grotta Verde, or else ‘Green cave’, Blue caves, terrestrial or marine, are all-natural formations that will leave the visitor in utter awe of nature’s marvel. Very prominent around the Mediterranean, these grottos are part of nature’s sauciness as they enhance the lacy, tantalising coastal line of the entire region, making the Mediterranean simply irresistible.