Is it? Skull and crossbones is a cultural symbol. Would we understand cultural symbols of humanoids from 10,000 years ago? Even having past civilizations being

Is it? Skull and crossbones is a cultural symbol. Would we understand cultural symbols of humanoids from 10,000 years ago? Even having past civilizations being storytellers causes the story and culture to mutate over generations. You are talking about a 100 generation game of telephone to make sure one particular symbol is passed down with perfect recall. --- Personally the best solution in my opinion is bury it deep down in a chamber that can withstand the time needed, leave signs on the outsides of the container. Then forget about it. Don't bother marking it visibly on the surface level.