10 Most Incredible Cave Waterfalls On Earth
→ Pictured here: Ruby Falls, Tennessee, USA. Gaping Gill, UK. Waiahuakua Sea Cave, Hawaii, USA. Natural Bridge, Springbrook Park, Australia.
Another reason to go to Hawaii some day: a waterfall-decorated 1,100ft-long cave that you can kayak through!
(via scinerds)
NG: A half-mile block of 40-story buildings could fit inside this lit stretch of Hang Son Doong in Vietnam, which may be the world’s largest subterranean passage.
The cave was found by a local man named Hồ-Khanh in 1991, however, it was only made public in 2009 when a group of British scientists conducted a survey, which determined it to be the world’s largest cave. It has a jungle inside and the end is out of sight.
