Video: Nat Geo Takes Us Inside the World's Longest Sea Caves
Posted on the 12 May 2016 by Kungfujedi @Kungfujedi
Journey to New Zealand with National Geographic to explore the longest sea caves in the world. Geologist Nicolas Barth was studying active faults on the South Island when he decided to climb down some cliffs and go for a swim. What he discovered there was truly astounding.