The same ones who should have put up the eerie hostile architecture and system of universal menacing messages. With the help of those who should have dismantled the nuclear plants and disposed of the nuclear weapons.
Seriously, filling the hole and covering it should be a one-time operation. Although in a sense you're right, if society collapses suddenly all that stuff stays there. But then we have a lot of other problems.
If society is collapsing who will cover up the hole?
You pre-wire the site for demolition and set a countdown timer: if the counter is not resent regularly it goes down to zero and the charges go off sealing things off.
Society is needed to prevent closing things off, so if it's gone then it happens without intervention.
If they accidentally go off, then things are fail-safed closed, and you have to expend resources to re-open things. If you don't want (or have) the resource to re-open then you don't have to worry about it.
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If society is collapsing who will cover up the hole?
It does seem like an excessive amount of work to theoretically save a few lives tops in a theoretical future cataclysm.
The same ones who should have put up the eerie hostile architecture and system of universal menacing messages. With the help of those who should have dismantled the nuclear plants and disposed of the nuclear weapons.
Seriously, filling the hole and covering it should be a one-time operation. Although in a sense you're right, if society collapses suddenly all that stuff stays there. But then we have a lot of other problems.
You pre-wire the site for demolition and set a countdown timer: if the counter is not resent regularly it goes down to zero and the charges go off sealing things off.
Society is needed to prevent closing things off, so if it's gone then it happens without intervention.
If they accidentally go off, then things are fail-safed closed, and you have to expend resources to re-open things. If you don't want (or have) the resource to re-open then you don't have to worry about it.