ONE INCREDIBLE DESTINATION. Discover the power of ONE at Doolin Cave and see for yourself how a single continuous drop of water formed the largest stalactite in Europe, the only one of its kind in Ireland, and a force of nature that will take your breath away.
The entrance to Cathedral Caverns in Grant, Alabama, USA, is the largest cave opening in the world. Measuring 38.4 m (126 ft) wide and 7.6 m (25 ft) high, Cathedral Caverns, which is approximately 1,220 m (4,000 ft) long, was originally known as the Bat Cave until it was developed into a tourist attraction after 1955.
The Son Doong Cave in Vietnam is the largest cave passage in the world. This huge and intricate cave system was created by water that percolated down from a rainforest above, ultimately carving into the rock.