I found this to be an interesting intellectual exercise and only wish that I had more time to go into it.

You dump a bunch of nuclear waste in a special location. But how do you make sure that 10,000 years from now, someone won’t step in it?

You design a bunch of really ugly signs and earthworks.

214adfa

Danger

Sickening

Trefoil

Spikes-02

Article here via John Murrell

Alex Eckelberry