we need to think how to warn our successors that this place they are entering is deadly: https://en.wikipedia.org/wiki/Long-time_nuclear_waste_warning_messages

we need to think how to warn our successors that this place they are entering is deadly: https://en.wikipedia.org/wiki/Long-time_nuclear_waste_warning_messages https://en.wikipedia.org/wiki/Long-time_nuclear_waste_warnin... or google: Nuclear semiotics