Using scientific data, conspiracists think that the government knows when and how it will erupt. They claim that the government will not release the information to the public and instead tell the rich upper class to protect them. There's no proof to this claim, but still, conspiracists persist.
The Georgia Guidestones
The Georgia Guidestones were built in Elberton, Georgia in 1980. There are 10 guidelines written on the stones in eight different languages. It seems to be the "rules" for humans. Nobody knows who built the monument or why. The person who bought it did so under an alias.