[21twelve]

That was my first thought “The Lost Tribe!!!”

I worked for a company that was trying to come up with some signage, symbols, monuments, etc. to place at a nuclear waste burial site. Something that 500,000 years from now would still mean “KEEP OUT”.

I hope these aren’t a similar thing!

[sphinx]

I worked for a company that was trying to come up with some signage, symbols, monuments, etc. to place at a nuclear waste burial site. Something that 500,000 years from now would still mean “KEEP OUT”.

Did your company come up with anything better than a skull and crossbones? Or the circle with the diagonal slash through it?

I recall the issue arising years ago when the anti-nuclear crowd was trying to argue that waste depositories needed to be designed to failproof/foolproof standards guaranteed for hundreds of thousands of years. Twelve thousand years ago our ancestors were in caves, trying to stay alive in the shadow of continental ice sheets. I always figured people 500,000 years from now would probably be able to take care of themselves.