Did Somebody Say Parkour?
There are some things that when not finished 100% to completion, it is ok, but then there are other things that definitely need to be finished in order to use them to their fullest potential. It isn’t as simple as trying to finish something and not finishing it, especially if other people are meant to use it.
This parkour tunnel/well is the kind of thing that looks like it would have benefited from someone finishing it properly. How is anyone meant to actually travel down here unless they know parkour? To be fair we don’t know what this is meant for… So it could be for parkour after all.