Grotte Di Nettuno

Neptune's Grotto is a stalactite cave near the town of Alghero on the island of Sardinia, Italy. The cave was discovered by local fishermen in the 18th century and has since developed into a popular tourist attraction. The grotto gets its name from the Roman god of the sea, Neptune.
  • Location: Capo Caccia, Alghero · (SS, Sardinia, Italy)
  • Length: 4,000 m
  • Elevation: 5 m
  • Geology: Sea cave
  • Entrances: 1
  • Access: Public
  • Show cave opened: 1959
Data from: en.wikipedia.org