Many RPGs have ancient… ‘things’… out there that the characters encounter and have to deal with. Most notably, of course, dungeons from a lost civilisation, filled with wondrous artefacts. I had wondered before how it would be possible for the locals to simply forget large parts of what the previous inhabitants left behind, but then I realised that we have models for this in real life too. All it takes is an event where most inhabitants are displaced — such as after the sacking of Rome, when the Forum was basically dismantled to serve as building material for new houses. So it’s not that unlikely as it first seemed to me.
I’ve written about that in this entry.