Grotto of the Emerald
Campania
The Grotto of the Emerald, or Grotta dello Smeraldo, is a unique sea cave located in Conca dei Marini on Italy's Amalfi Coast. Its name derives from the striking emerald glow of the water inside, caused by sunlight refracting through an underwater fissure connecting the cave to the open sea. The cave measures approximately 45 by 32 meters with a cavern roof about 24 meters above the water level. Formed by tectonic movements known as bradyseism, the cave was originally above sea level but later subsided and became partially flooded by seawater, submerging its stunning stalagmites and stalactites. Unlike the famous Blue Grotto on nearby Capri, the Grotto of the Emerald has no natural opening above the waterline, making it accessible only through an underwater entrance. Discovered in 1932 by fisherman Luigi Buonocore, the grotto offers visitors a magical experience as boats take them through the illuminated waters. The cave also hosts a rare species of sea anemone, Anemonactis mazeli, which thrives in its dark environment. Access is convenient via the Amalfi Coast's main road, Strada Statale 163, with an elevator leading down to the cave’s entrance where boats await to guide visitors through this natural wonder.
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Tip: The best time to visit the Grotto of the Emerald is during daylight hours when sunlight can penetrate the underwater fissure to illuminate the cave with its signature emerald glow. It is advisable to book tickets in advance, especially during the busy tourist season, to avoid long waits. Access to the grotto is via Strada Statale 163, where a small parking lot and an elevator provide easy descent to the cave level. Visitors should prepare for a boat ride inside the cave and check opening hours ahead of time. Discounts may be available for groups, seniors, or children. Bring a camera to capture the mesmerizing light effects but be mindful of restrictions on flash photography to protect the cave’s environment.
Interesting facts
- •The emerald color of the water is caused by sunlight filtering through an underwater fissure connecting the cave to the sea.
- •The cave contains stalagmites and stalactites, some forming columns over ten meters tall, partially submerged due to geological subsidence.
- •A rare species of sea anemone, Anemonactis mazeli, lives inside the grotto in the absence of light.
- •In 1956, an underwater nativity scene made of ceramic figurines was installed on the cave floor, with divers annually placing flower bouquets during Christmas.
- •The grotto was used as a filming location for the Italian television series "Capri."
History
The Grotto of the Emerald was discovered relatively recently in 1932 by local fisherman Luigi Buonocore.
The cave formed through bradyseism, a geological phenomenon involving the uplift and subsidence of land, which fractured the cliffs and created the cave's fissures.
Originally above sea level, the cave gradually sank, allowing seawater to flood its interior and partially submerge its stalagmites and stalactites.
Since its discovery, the grotto has become a celebrated natural attraction on the Amalfi Coast, with infrastructure developed to facilitate visitor access via an elevator and boat tours.
Place Guide
Entrance and Elevator Access
Visitors access the grotto via Strada Statale 163, descending by elevator from the main road to the cave level where boats await.
Boat Tour Through the Cave
Small boats ferry visitors through the partially flooded cave, allowing them to experience the emerald light and view submerged stalagmites and stalactites up close.
Underwater Nativity Scene1956
Installed in 1956 on the cave floor, this ceramic nativity scene is a local tradition, with divers placing flowers annually during Christmas.
Contact
Phone: 089 857096