A videoon placing warning signs at sites of nuclear waste storage. Due to the long half lives of these products they need to be kept for many millennia, which makes it very likely that the storage facilities will eventually be forgotten. The challenges is to ensure that warnings are understood and the place remains undisturbed long after modern culture and languages are extinct, so we don’t hurt our descendants in the year 11174AD.
The US Dept of Energy came up with a message (to be translated into all UN Languages) to hopefully give Future!Humans the hint to stay the hell away. It starts at about 7:00 minute mark, although the whole video is worth a look.
I will say
I think the message is simply going to make future humans more curious. Since when has “Stay Away” ever stop intrepid archaeologists?
Seriously, if such a message was at an Egyptian Temple would you not want to investigate?
Plus the message will be the future Rosetta Stone.