Hello!
Are you talking about the room with a golden apple in it?
If yes, it is a puzzle to choose the right path for the satyr. There are three possible paths for him to take after you press the plate, and you have two boxes to block two of those paths. Satyr won't move on the path that is blocked. So you have to find which path would allow you to step on spikes exactly the moment satyr switches them so you don't get impaled. I hope this helps!