If this interests you, sci-fi author and astrophysicist Gregory Benford did a deep dive into the subject some years back after being put on a committee to try to decide how to mark a nuclear waste storage site as unsafe even if humanity collapses and written language is forgotten.
If this interests you, sci-fi author and astrophysicist Gregory Benford did a deep dive into the subject some years back after being put on a committee to try to decide how to mark a nuclear waste storage site as unsafe even if humanity collapses and written language is forgotten.
https://www.goodreads.com/book/show/2014020.Deep_Time
This is not a place of honor