WORLD'S LARGEST ICE CAVE watch_later Wednesday, December 5, 2012 comment Add Comment The Eisriesenwelt (German for "World of the Ice Giants") is a natural limestone ice cave located in Werfen, Austria, about 40 km south of Salzburg. It is the largest ice cave in the world, extending more than 42km. Share This : plus_one Google+ share Facebook share Twitter share Pinterest Daradonya chevron_left chevron_right