> dig a hole in a geologically boring mountain away from people
Where?
Where on Earth will you find a place that will still be like that in 200,000 years.
Where?
Where on Earth will you find a place that will still be like that in 200,000 years.
After a few hundred years it's no more radioactive than the rocks from which it came.
You seem to have the common misconception that "long half-life" = "more radioactive", when in fact "long half-life" = "less radioactive", by definition.
The other main thing to remember when burying nuclear waste is that it's important to keep it away from aquifers and generally any flow of water under the ground. Obviously you'd probably want to seal it in waterproof containers anyway, but it's better to not have to rely on the container staying intact over long spans of time.