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Neptune’s Grotto (Grotta di Nettuno)

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Neptune’s Grotto, or Grotta di Nettuno, is one of Sardinia’s most breathtaking natural wonders. Located beneath the towering cliffs of Capo Caccia near Alghero, this ancient marine cave stretches for over 4 kilometers, though only a portion is accessible to visitors. Inside, stunning stalactites and stalagmites form majestic columns and crystal-clear pools, creating an unforgettable underground experience.

What to See & Do

  • Admire dramatic stalactite 💧 and stalagmite formations 🪨✨
  • Visit the underground lake 🌊 – Lago Lamarmora 💧🏞️
  • Take guided tours 🧑‍🏫 to learn about the cave’s geology 💡 and legends 📜🗺️
  • Capture stunning photos 📸 of the reflections ✨ inside the cave 💧🖼️
  • Explore Capo Caccia’s scenic cliffs ⛰️ nearby 🔭👀

How to Get There

  • By Boat 🛥️: Regular tours 🚢 depart from Alghero’s harbor ⚓ (about 45 minutes ⏱️) 💨✅
  • By Car 🚗: Drive to Capo Caccia 🧭 and descend the Escala del Cabirol staircase 🪜🚶‍♀️
  • By Bus 🚌: Public transport 🚍 from Alghero 🤝 to Capo Caccia 🗺️ available seasonally ☀️🗓️
  • Note ⚠️: Boat access 🚢 depends on sea conditions 🌊🚫🙏

Travel Tips

  • Check sea conditions 🌊 before planning your visit 📞📅
  • Wear comfortable shoes 👟 for the staircase descent 🪜💪
  • Bring a light jacket 🧥 – temperatures 🌡️ inside remain cool 🥶 year-round ✅👍
  • Avoid touching formations 🖐️🚫 to help preserve 💚 the cave 🪨🙏
  • Visit early ⏰ to avoid crowds 🏃‍♀️ and boat traffic 🛥️🤫

Suggested Itinerary

  • 8:30 AM – Depart 🚢 Alghero harbor ⚓ by boat 🛥️💨
  • 9:15 AM – Arrive 🧭 at Neptune’s Grotto 🔱 and explore the cave 🪨 with a guided tour 🧑‍🏫💡
  • 11:00 AM – Enjoy coastal views 👀 from Capo Caccia cliffs ⛰️📸
  • 1:00 PM – Lunch 🍽️ at a seaside restaurant 🦞 near Maria Pia Beach 🏖️😋👋

Opening Hours & Entry

Open:

Daily : 9:00 AM – 5:00 PM (weather permitting)

Entry Fee:

€14 (adults), €10 (children)
Access : By boat or by descending 654 steps known as the Escala del Cabirol

Best Time to Visit:

Morning hours for calmer seas and better lighting inside the cave

Location

📌 Neptune’s Grotto (Grotta di Nettuno), Capo Caccia, Alghero, Sardinia, Italy

👉 View on Google Maps

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