Goodness sakes...
You are so spot on with this.
Brought to mind, how often we used to climb onto the roof of a nearby factory.
The attraction was said roof being completely flat and covered with sheets of corrugated plastic.
When you ran along it, you could make an echo sound, because of the drop beneath.
Pretty certain there was a contemporary news report, of someone falling to their death, when a similar roof covering couldn't take their weight.
The other thing I have strong memories of, was climbing up a drainpipe to reach an elevated space where we could play.
Although terrified - it must have been around 30 feet upwards - you simply had to comply or face ridicule.
Used to also be the best at jumping between roofs of aligned 'bin sheds'.
Would have been a fair distance to cover and necessitated a, 'runny jump'.
Right enough, when you think back on the mental risks taken for granted...