Grotta del Gelo
The 14th deepest cave in the world
125m · Depth
Grotta del Gelo ("Cave of Frost") is a volcanic cave of Mount Etna which is known for the presence of a large amount of ice. The cave formed in 1614–1624 during a large eruption of the volcano, inside one of the lava flows produced during that eruption. Within the two subsequent decades, ice grew and accumulated in the cave. Today it is a tourist destination.
Cave data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).