Neptune's Caves and Capo Caccia:

Neptune's Caves (Grotte di Nettuno), located a few kilometers from Alghero, represent one of the most spectacular natural treasures of Sardinia and the entire Mediterranean. This in-depth guide will take you through the history, geology, visiting methods, and practical tips for an unforgettable experience inside this extraordinary natural monument. The caves open on the northwest side of Capo Caccia, within the Porto Conte Marine Protected Area. They can be reached in two ways:

By Land: Taking the panoramic road SS127bis and then SP55 brings you to the Capo Caccia parking area. From here starts the famous Escala del Cabirol (Goat's Steps), a stairway of 654 steps carved into the rock that leads directly to the cave entrance. The path offers spectacular views of the sea and the Mediterranean scrub.

By Sea: Tourist boats depart daily from the port of Alghero and from Cala Dragunara in Porto Conte. The journey takes about 40 minutes and allows you to admire the Coral Riviera and the cliffs of Capo Caccia from the sea. Access by sea is active primarily from spring to autumn, depending on weather and sea conditions.

An extra-urban bus service from Alghero is also available,

active all year round, which arrives right at the entrance of the stairway.

Hours, Prices, and Reservations
Hours: Generally from 9:00 AM to 6:00 PM, with the last entry at 5:00 PM. Hours may vary based on the season and sea conditions.
Prices: Full ticket costs €14, reduced rate €10 for seniors over 65, children aged 7-14, and residents. Children under 7 enter free.
The boat ticket for sea access is separate and does not include entry to the cave.

It is advisable to arrive at least 40 minutes before your booked visit time, especially if walking down the stairs.

History and Legend

Origins and Myth:
Neptune's Caves take their name from the Roman god of the sea, Neptune, who according to legend chose this very place as his favorite abode. The official discovery dates back to the 18th century when a fisherman named Ferrandino accidentally stumbled upon the cave entrance. However, traces of human frequentation in the area suggest it was known as early as Roman times and perhaps even prehistoric times.

From Nobility to European Travelers

In the 19th century, the cave became a destination for illustrious visitors, including members of the Savoy family and the English traveler John Warre Tyndale, who spread its fame throughout Europe. Over time, Neptune's Caves have become one of Alghero's tourism symbols, attracting thousands of visitors from all over the world every year.

What to See Inside

The guided tour lasts about 45 minutes and winds through halls rich in stalactites, stalagmites, and underground lakes. The most evocative points include:
Lamarmora Lake: One of the largest saltwater lakes in Europe, fed by the sea, with transparent waters and unique reflections.
The Holy Water Font (Acquasantiera):
A monumental stalagmite about two meters high, with natural basins collecting rainwater, an important source for local fauna.
Room of the Queens: Famous for its delicate formations and crystalline concretions.
The Christmas Tree and Great Organ Formations: A rock formation resembling the pipes of an organ.
The Room of Ruins
The Palace Room
The Music Gallery (Tribuna della Musica): A natural balcony with a panoramic view of the cave. The guides recount the geological history of the cave and the archaeological discoveries of the area, such as Neolithic graffiti and artifacts found there.

A Unique Ecosystem

The caves once hosted the monk seal, now disappeared from the area. The internal environment, stable and protected, favors the growth of limestone formations that develop over millennia, making every visit a journey into the history of the Earth.

How to Visit Neptune's Caves

Hours and Visit Methods
Guided tours last about 30 minutes and take place every hour on the hour, from 9:00 AM to 7:00 PM, daily under favorable weather conditions.
Online booking is recommended, especially in high season, to avoid queues and guarantee access.
Full ticket costs €14, reduced €10. The reservation does not include the entrance ticket, which must be purchased separately.
Practical Tips
Arrive at least 40 minutes before the booked time if choosing the stairway, to tackle the descent and check-in calmly.
Wear comfortable shoes and bring a light jacket: the internal temperature is constant and cool all year round.
Always check weather and sea conditions before visiting: access may be suspended in case of rough seas.

Other Caves in the Karst System

Neptune's Cave is part of a wider system that includes:
Nereo Cave: The largest submerged marine cave in the Mediterranean, a destination for expert divers.
The Green Cave in Alghero: Was accessible only with a special permit but is reopening in May 2025, famous for prehistoric finds. The opening of the Green Cave further enriches Alghero's tourism offer, becoming an unmissable stop.
Cave of Lace and Embroidery (Grotta dei Pizzi e Ricami): Visitable only by sea.

Nature, Excursions, and Activities
The Capo Caccia promontory is a protected area of great naturalistic value. It hosts rare species such as the griffon vulture, peregrine falcons, shags, and rich terrestrial fauna. Nearby are panoramic trails for trekking and mountain biking, ideal for families and nature lovers.
The clear waters are perfect for diving and snorkeling. Numerous diving centers organize excursions to Nereo Cave and along the coast.

Practical Tips

Wear comfortable shoes for the stairway.
Bring a jacket: the internal temperature is lower.
Book in advance during high season.
Always check weather conditions before leaving, especially for access by sea.
Follow updates on the official social pages of Neptune's Cave for real-time information.

Communication with Owners

Before booking, do not hesitate to contact the owners directly for any questions or clarifications; today there are many technological means and WhatsApp is one of them (free of charge). This will also give you an idea of their hospitality and availability. You can ask for additional information on specific services, check-in and check-out arrangements, or recommendations for nearby activities and restaurants.

Frequently Asked Questions

Is the cave accessible to everyone?

Land access requires good physical fitness to tackle the stairway. Access by sea is simpler, but there are still some steps at the entrance.

Can I book online?

Yes, booking is recommended especially in summer months and can be done through the official website or local agencies.

What are the bus schedules?

The ARST line connects Alghero to Capo Caccia all year round; the trip takes about 50 minutes.

What happens in case of bad weather?

Access by sea is suspended. Access by land may remain open subject to safety conditions.

Are there other attractions nearby?

Yes: the Nuragic village of Palmavera, the Coral Museum of Alghero, Lake Baratz, and the trails of Porto Conte Park.