There are stairs and an elevator that lead down to a marine cave close to the community of Conca dei Marini. Sunlight filtering over the water gives it the appearance of being lit from within, this time in an emerald-green glow, similar to the Blue Grotto in Capri. It is possible to see through to the bottom since the water is so transparent. You may either take a boat to the cave from the shore in Amalfi, which takes approximately 15 minutes, or boats wait at the cave mouth to carry you inside.