I mean in the west / europe, clearing old graveyards is pretty common after a while. I looked up the legislation, basically when you buy a grave plot, you pay for the rights for a minimum of 10 years. That is separated between above and underground rights; if the above ground rights have passed, the grave stone and other above ground items are removed; if the underground rights have passed and the site has been resold, any leftover remains (bone fragments at that point) will either be excavated and put into a mass grave, or buried a bit deeper 'below' the new grave.
But a more accurate comparison would be the elite, they get interred in family crypts or under church halls for hundreds of years (or indefinitely, maybe if there's a major religious or political revolution will they get removed, destroyed, or forgotten).
The modern-day cathedrals and mausoleums may end up being the pyramids of future generations. like, 4-5000 year future generations. I'm sure they'll survive the nuclear apocalypse.
I think the way it works in france is that when you buy a graveyard plot, you buy it forever, as long as someone maintains it. If the plot isn't maintained, after a while it is deemed abandoned and reclaimed.
The one that looks like it has been designed to resist nuclear apocalypse is Lenin's mausoleum. I know I'll be dead anyway, but still, the thought that all that will be left of our civilisation is the remains of that "great ruler"...
But a more accurate comparison would be the elite, they get interred in family crypts or under church halls for hundreds of years (or indefinitely, maybe if there's a major religious or political revolution will they get removed, destroyed, or forgotten).
The modern-day cathedrals and mausoleums may end up being the pyramids of future generations. like, 4-5000 year future generations. I'm sure they'll survive the nuclear apocalypse.