The Long Hallway states "draw an extra tile and place it on the Long Hallway's unexplored edge (if possible). If the extra tile features a black triangle, draw an encounter card during your Villain Phase.”
This brings up several questions for me:
Which of the Long Hallway and extra tile do you place a Monster on? One or the other or both?
It is clear that if the extra tile has a black triangle you draw an Encounter Card during your Villain phase. What if the Long Hallway has a black triangle as well? Do you draw two Encounter cards?