Extreme Vertigo Challenge is designed to challenge your groups fears of height.

You abseil down a sheer rock face and walk along a narrow path 100 feet up a cliff (only continue reading if your not faint hearted).

 

Then just as you thought it couldn't get any worse the path disappears but the journey continues across the cliff face 100 feet above the ground until you can find solid ground again. 

While you are here why not test your groups claustrophobia? And see if you can find your way through the pitch black tunnels and passages straight through the cliff crawling on your hands and knees.