Sweden started building a final storage facility for spent nuclear fuel on Wednesday, only the second such site in the world, where highly radioactive waste will be stored for 100,000 years.
Archived version: https://web.archive.org/web/20250116073617/https://www.arctictoday.com/sweden-starts-building-100000-year-storage-site-for-spent-nuclear-fuel/
I think that’s still being debated or decided or refined. Warnings or signage need to be interpreted correctly in 80,000 years.