Am I crazy or is this how a zombie invasion usually starts?

Archaeologists are to open a long-sealed cave under a Mexican pyramid in the hope that it will unlock the mystery of one of ancient civilisation’s greatest cities.

I’m pretty sure caves leading into pyramids are sealed for a good reason be it homicidal mummies bent on the destruction of the world, aliens from outer space bent on the destruction of the world, or the destroyer of worlds himself!.