Neptune's Grotto near Alghero, Sardinia, Italy, Europe

Tourboat at Neptune Grotto, Grotta di Nettuno, Parco Naturale Regionale di Porto Conto, near Alghero, Sardinia, Italy, Europe

652 steps leading down to the stalactite cave Grotta di Nettuno, Neptune's Grotto, Sardinia, Italy, Europe