Night climbing

In principle I can see what Katherine Rundell gets from Night Climbing

[If…] you want to know what it is to have one thought only, go climbing without ropes. I am not elegant on the ground, but on a wall I feel I am and there is nobody who can see well enough in the midnight to contradict me. It’s a cheap high but a very real one, to swing so close to disaster. Night climbing is better than most sex. Whipplesnaith, the author of The Night Climbers of Cambridge, puts it best: ‘If you slip, you will still have three seconds to live.’

… in practice, you'd never get me up there. Nope. Nope. Nope.