The lift on the castle's lower level

Near the castle's entrance a lift leads up to its central part, and it won't move.
Nudge 1Where to look
It's locked like the village's elevators. Its key has a spooky look.
What you needOther problems to solve first
Solve these first (each opens its own page, no answers on the way):
Show the solutionThe whole answer, with a video
Bring the key with a skull motif from the graveyard's far right (The gap in the graveyard), stand in the middle of the lift's car and drop it: up it goes. Like every lift, it comes down to Dizzy by itself when he stands below it.