Caves and natural wonders in Alghero

Sardinia's Coastal Wonders

The limestone cliffs of northwestern Sardinia near Alghero harbor a dense concentration of marine caves and geological formations within the Porto Conte Regional Park. This area, defined by the massive promontories of Capo Caccia and Punta Giglio, contains unique karst systems like Neptune's Grotto and Nereo Cave, the Mediterranean's largest underwater cave. The sites feature ancient stalactites, prehistoric archaeological remains, and diverse marine ecosystems accessible via coastal paths or diving excursions.

Sardinia's Coastal Wonders — Map

Tobias Helfrich / CC BY-SA 2.5

A

Neptune's Grotto

Neptune's Grotto is a stalactite cave near the town of Alghero on the island of Sardinia, Italy.

Christian Pinatel de Salvator / CC BY-SA 4.0

B

Capo Caccia

Massive limestone promontory overlooking the Porto Conte bay. It is home to the Escala del Cabirol and serves as a major landmark for the northwestern Sardinian coast.

C

Grotta della Dragunara

Partially submerged cave situated near Cala Dragunara in the Gulf of Porto Conte.

D

Grotta Verde

Karst cave on the Capo Caccia cliffs containing prehistoric remains and notable for the green hue of its interior walls.

Marco Busdraghi / CC BY 3.0

E

Nereo Cave

Nereo Cave is a huge underwater sea-cave situated on the north-west of Sardinia in the Coral riviera of Alghero, Italy.

Marco Busdraghi / CC BY 3.0

F

Grotta dei Cervi

Three-level marine cave in the Punta Giglio complex, known for the discovery of fossilized remains of the extinct deer species Megaceros cazioti.

Marco Busdraghi / CC BY 3.0

G

Grotta dei Fantasmi

Submerged marine cave in Punta Giglio featuring white limestone formations that resemble spectral figures underwater.

Marco Busdraghi / CC BY 3.0

H

Punta Giglio

Limestone headland enclosing the Porto Conte bay, featuring a network of nature trails and preserved World War II military fortifications.

I

Grotta della Madonnina

Submerged cave at the southern tip of Capo Caccia, used for technical diving to observe its internal stalactites and marine biodiversity.

J

Grotta del Sorell

Sea-level cave situated beneath the Capo Caccia viewpoint, positioned directly opposite the island of Foradada.

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