imagine future archeologists finding one of those landfills underneath the grass at a park and they're trying to figure out why on earth someone kept so many strange items in one place,(reply>), Nah, they'll just call them "Ritual Offerings" and create some specious theories about religious behaviour...,(reply>), I think they will realize that it’s trash by the empty containers,(reply>), @Clockwork Kirlia Would probably show up in things that do tend to get preserved like official land-use records etc too.,(reply>), Fortunately, they'll almost certainly find the remains of something complaining about landfills inside the landfills, so they'll have some clues.