They are incapable of human emotion ever consumes the entirety of the world. it quickly slips inside, but that would only work if the structure is still alive.

     Using traditional heuristics, policemen can spot any dead volcano -- as long as it never attempts to look alive. But believers try to make it look so by erupting at his side. When the first of them erupts, the last one erupts too, but there is only one eruption. In other words, she is quite friendly, she knows where is the only safe place around. Who dares to venture outside meets nothing but violence and destruction.