Don't do anything I wouldn't do...

Hah!

The family has reportedly gone zip-lining, the definition of which is (pulled from Wikipedia):

A zip-line (also known as a flying fox, zip wire, aerial runway, aerial ropeslide, death slide[!] or tyrolean crossing [particularly apt in this case!]) consists of a pulley suspended on a cable mounted on an incline. It is designed to enable a user propelled by gravity to traverse from the top to the bottom of the inclined cable, usually made of stainless steel, by holding on or attaching to the freely moving pulley.

Say whaaaaaaaat?

The important point is they lived through it.