But an even more devastating catastrophe could happen at one of New Zealand's most iconic tourist destinations, Piopiotahi/Milford Sound. And it is unclear how this disaster can be prevented.

It's all in a day's fun in magical Milford Sound/Piopiotahi, which is a roughly 180-mile drive northwest of Queenstown. Famously dubbed the "eighth wonder of the world" by novelist Rudyard Kipling ...

It's all in a day's fun in magical Milford Sound/Piopiotahi, which is a roughly 180-mile drive northwest of Queenstown. Famously dubbed the "eighth wonder of the world" by novelist Rudyard Kipling ...