You cannot seem to get the Bridge of Khazad-dûm out of your mind....
The bridge of Khazad-dûm lies in the east of Nud-melek.
You should walk out onto the Bridge of Khazad-dûm.
A scene unfolds before you on the Bridge of Khazad-dûm.
You should observe the scene of what came to pass upon the bridge.
The goat you brought here is back a ways, east of the bridge.
You should return to the goat to head back to the First Hall.