We considered ourselves to be a powerful culture.
This place is not a place of honor... no highly esteemed deed is commemorated here.
This message is a warning about danger. The danger is in a particular location. The danger is still present, in your time, as it was in ours.
The danger is to the body, and it can kill. The form of the danger is an emanation of energy.
The danger is unleashed only if you substantially disturb this place physically. This place is best shunned and left uninhabited.