Put it out of reach of humans without advanced tech. Under 2km of antarctic ice, in a deep sea trench, things like that. We are not talking millions of years, only a few thousand. And in case of accidents, water/ice is a great radiation blocker.
General rules:
Exceptions may be made at the discretion of the mods.
Put it out of reach of humans without advanced tech. Under 2km of antarctic ice, in a deep sea trench, things like that. We are not talking millions of years, only a few thousand. And in case of accidents, water/ice is a great radiation blocker.