Take a look at what's behind the world's toughest motorbikes. These need to be built to undergo extreme conditions and take on extraordinary challenges.
Billed as 'the most enjoyable Extreme Enduro', Red Bull Sea to Sky is back for 2017 for the eighth time.
Highlights from Round 5 from the GNCC series.
This rider was lucky the mineshaft was only 15 meters deep. The outcome could have been much worse.