[Good thing Jason over here is thoroughly trained in picking most types of locks, including old-fashioned ones. Not that he knows the lock on the door is old-fashioned, nor does he know what method this guy used. That just means he's not going to be satisfied until he takes a stab at it himself.]

Or, here's a more positive idea — it could be hiding something important. Maybe documents, clues, something we could use to our advantage. That possibility alone makes it worth checking out.

[... It could have more dinosaurs, too, though. He's not dismissing that idea.]