The black night sky turned red as the massive gate appeared out of nowhere. The people slowly looked out of their windows, terrified. They didn't understand what was going on, albeit some of them recognized the familiar shape.
A large double door crackling with magic, that's a dungeon's gate and a massive one at that. From a single look, it seems to be over twenty yards wide and over thirty yards tall. The two massive doors were decorated with bloodied skeletons and burned in a blinding red flame that illuminated the sky.
