BEING told you're about to take on potentially the most dangerous challenge of the I'm A Celebrity ... Get Me Out Of Here! series is a daunting prospect.

With all of the Tucker Trials tested several times before celebrities get to them, that's what happened when this scribe was the teaser guinea pig for the upcoming Riding High challenge.

"If you're going to hurt yourself in any of the challenges, this is the one it is going to happen on," head rigger Graham Terrell said.

The Riding High challenge will see contestants Lisa Curry and Keira Maguire fitted with harnesses before they attempt to strike stars representing extra food for the camp on an 80 metre long high wire plank obstacle course elevated more than 40 metres above a dam.

To make it more difficult, they must get on and ride a motorbike with sidecar when they reach the half way point of the challenge.

The bike isn't harnessed so if, or more likely when, it falls, it will crash to the ground below.

Celebrities must balance the bike along the narrow tracks and smash the remaining stars to earn further meals for camp.

I'm A Celebrity... Get Me Out of Here! airs tonight at 7.30pm on Channel 10.

* The journalist is in South Africa as a guest of Channel Ten.