You don't keep future civilizations out of the nuclear waste dump by making it look like the cover art for a metal album. You keep them out by making it look like the cover art for a Spin Doctors album
This is
Not a place of honor
That's what I said now
Dig here
And you might be a goner
Just go ahead now
There is
Danger in your time still
Just as in ours now
Do not
Linger long or you will
Get sick and die now
don't go in
just turn and flee
listen to your geiger counter can't you see
i ain't got no use or reason to be coz
i'm an emanation of energy
i'm an emanation of energy
... but they considered it as a way to preserve information, rather than as being part of the warning due to its infectious behavior and people's instincts to avoid that