The Haunted Gate is a Baleful Realmgate in Wortbad, named for the writhing ghostly forms visible in its internal corona. The roiling magic energies within it's arch are entangled with Death Magic and the spirits of the dead so it glows with an eerie pale green-white light. The dark stonework is damp and weather stained with thin layers of green algae growing in places.
It is partly surrounded by a crumbling ruin from a time, long ago in another age, when it was enclosed by a protective building. Though no one knows if it was protecting the gate or the lands around it from the gate.
Some detail shots: