Silent City is the name of a dead city located in the Beastmen Nations.
Background
According to tales told by the neighboring kingdoms, there once was a city located in the Beastmen Nations. It was destroyed not by war, disease or other any natural disaster, but in the form of three legendary undead monsters that suddenly appeared in the city. Undead monsters known to the New World inhabitants as Soul Eaters. These undead beasts devastated the entire city about ninety-five percent of the people who lived there, over one hundred thousand people, were killed. After the onslaught it was abandoned and entered legend as the "Silent City”.
Legacy
The tale of the Silent City is regarded as work of fiction. But it served as a precursory warning to Marquis Raeven to signal the Kingdom's Army to retreat when he recognized the beasts Ainz Ooal Gown had summoned for his mounts.