Maniacs?

I suppose it depends on your view. I admire people who 'do' what they want to do. I've had different activity interests throughout my life. Things on courts. Things in the river, Things on hills ...and on mountains ....but never on vertical walls hanging by my finger nails and toe tips. But I do admire people who do like this guy on one of the climbs in the Avon Gorge , Bristol.
Seen on a walk earlier today which makes me feel very humble.