Did the walk over the o2, an interesting experienc...

Did the walk over the o2, an interesting experience using the via ferreta method of climbing. Having done similar experiences before I found ot a bit too easy and a bit excessive on the kit they required you to use.
I feel that the overall experience was good but lacking any real challenge (and a zipline).
Ending up I what looks like a bit of waste ground at the back did not give the experience the finish it needed, hence only 3 stars.