yeah this fazed me out as well - theres def a clickable hotspot that shows up..............but red herring so don't fret it! Bug?
Yeah, I was thinking the clickable spot was a red herring. Maybe at one point in development it did something else? Like the belt had slipped off and you had to put it back on a la Samorost 2. Only Amanita knows...
I think that's the mechanism which opens the door.
You're right, I didn't notice that the belt moves as the door opens. Thanks!