Grotte di Nettuno
The Grotte di Nettuno ( German Neptune Grotto ) are a stalactite cave near Alghero in the province of Sassari in Sardinia , near the Capo Caccia, around which a maritime reserve extends.
The grotto is one meter above sea level at the foot of a 110 m high steep rock face and can only be visited when the sea is calm. It can be reached via a staircase with 654 steps in the almost vertical wall, the Escala del Cabirol ( German: deer head ). Alternatively, you can take a less strenuous boat tour from Alghero or a nearby car park.
Only a few hundred meters of the extensive, approximately 4 km long cave system are accessible to the public. As part of a guided tour, stalactite formations, calcareous sinter deposits and a small salt water lake of around 120 m long that is connected to the sea can be viewed . Explanations are given over permanently installed loudspeakers in Italian, English and German.
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Coordinates: 40 ° 34 ′ 21 ″ N , 8 ° 9 ′ 33 ″ E