Grottoes of Neptune
Neptune’s Grotto, situated near Alghero in Sardinia on the Capo Caccia promontory, is a remarkable natural marine cave that offers a glimpse into the stunning geological wonders formed over thousands of years. With its captivating formations and historical significance, Neptune’s Grotto is a must-visit destination for adventurous tourists.
Highlights of Neptune’s Grotto
La Marmora Lake: One of Europe’s largest saltwater basins, surrounded by impressive stalactites and stalagmites. The Holy Water Font, a two-meter-tall stalagmite, serves as a water source for local bird species.
Fascinating Rooms: The guided tour through Neptune’s Grotto takes visitors through several rooms with evocative names like the Hall of Ruins and the Royal Palace Hall. Each room showcases unique limestone formations created by centuries of dripping water, providing visitors with a mesmerizing experience.
Click here to learn more about creating a personal itineraryAdditional Nearby Caves: Beyond Neptune’s Grotto, the Capo Caccia area is home to other intriguing caves such as Grotta dei Pizzi e Ricami, Grotta di Nereo, and Grotta Verde. Grotta Verde is particularly notable for its Neolithic-era paintings, adding historical depth to your visit.
Getting to Neptune’s Grotto
By Car: From Alghero, take State Road SS127 Bis to Fertilia, then SP 55 to Capo Caccia. The journey is approximately 25 km and takes around 35 minutes. From Sassari, drive southwest along SS291 var, then SS291, and finally SP55 bis and SP55, which takes about 40 to 45 minutes. Parking is free but limited, so be prepared to walk a bit to the ticket counter.
Since 2015, our website has specialized in individual planning of unique routes, taking into account personal preferences and desires. Each of you will receive a unique PDF file from us, which contains everything you need: travel routes, car rentals, hotels, the best tourist attractions, attractions for kids and everything you need for a perfect vacation. During the trip, we are available for you by phone via WhatsApp. Our personal service provides information from A to Z, taking into account many small details that can become a decisive factor on the way from a wasted trip to an unforgettable vacation. Our service will make your trip comfortable, save a lot of time on planning and preparation, and most importantly – will allow you to become freer and fully enjoy the pleasure of the trip.
By Bus: Bus ARST 9321 regularly connects Alghero to Capo Caccia, taking about 40 minutes. If you are coming from elsewhere in Sardinia, you will first need to reach Alghero. Plan to arrive at Capo Caccia at least 40 minutes before your scheduled visit to retrieve your tickets and descend the 654 steps of the Escala del Cabirol.
By Boat: Ferry boats from Alghero’s tourist harbor or Porto Conte offer an alternative to the stairs. The 45-minute ride costs around €15 (seasonal variations apply). Companies such as Linea Grotte Navisarda and Frecce delle Grotte di A. Piccinnu operate these trips. Please note that boat tickets do not include cave entry, but boat passengers have reserved spots for the cave tour.

Tips for Tourists
Booking and Planning:
- Reserve your spot in advance through the Alghero Experience app/website.
- Arrive early to ensure you have enough time to retrieve tickets and prepare for the tour.
- Wear comfortable shoes suitable for walking and climbing stairs.
What Not to Miss:
- Don’t miss the panoramic views from the Escala del Cabirol.
- Capture the stunning formations in La Marmora Lake and other rooms.
- If possible, plan your visit to coincide with sunset for breathtaking views from Capo Caccia.
Neptune’s Grotto is located in the Capo Caccia promontory, approximately 25 km (15.5 miles) from Alghero and 45 km (28 miles) from Sassari.
Opening Hours: Daily from 9:00 am to either 5:00 pm or 7:00 pm, depending on the season. Closed on Christmas.
Ticket Prices:
- Full price: €14
- Reduced price (ages 7-14, over 65, groups of 25+): €10
What we propose Emma Heidi Take all the stress out of planning your trip! With our experts, you can create the perfect itinerary for you – complete, comfortable, and tailored to all your dreams, wishes, and needs. We take care of every little detail, so you can simply focus on enjoying your journey. We’ve been designing personalized itineraries since 2015, and over the years we’ve created thousands of custom itineraries for happy clients. Save time, avoid confusion – we do the work for you. Our service saves you weeks of searching, reading, comparing, and complicated planning. Instead of wasting endless hours – you receive a ready-to-use, accurate and clear itinerary. A tailor-made itinerary – built just for you. Your itinerary is personally designed based on our experts’ real field experience and genuine feedback from hundreds of travelers – including hidden discoveries and insider tips that don’t appear in any travel guide. Smart accommodation selection – often saves you hundreds or even thousands of dollars. We help you choose verified and recommended places to stay, checking availability for your exact travel dates. Sometimes we suggest hotels not “in the center,” but in safe, convenient, and highly strategic locations – which can significantly reduce travel costs and save you even thousands of dollars. We’re by your side even during the trip. We stay with you throughout your vacation – providing professional help whenever needed. If the weather changes, there’s a strike, a local event, heavy crowds, or any unexpected situation – we are here to update, guide, and adjust your itinerary in real time. Easy-to-use itinerary – with direct navigation links. Your itinerary includes direct Waze / Google Maps links – no need to search for parking addresses, no stress, no mistakes. Just tap – and go. Want to know if it’s really worth it? Take a look at the experiences of travelers who built their personal itinerary with us. Click here and let’s start building the itinerary that will save you time, money, and stress – and turn your vacation into perfection. Of course, your first inquiry is completely free – with no commitment whatsoever. How it works
Customer Experience Manager
![]()
![]()
![]()
![]()
![]()
Service cost: from only $420. (Special price for short itineraries up to 5 days). Clients tell us the itinerary saves them costly mistakes, fines, wrong choices – plus exclusive discounts on car rentals, better-priced accommodations, and money-saving local tips.
Latest articles
Kaprun Dam (Hochgebirgsstauseen)
Kaprun Dam (Kaprun Hochgebirgsstauseen) is a high-altitude reservoir complex set […]









