"Okay," she finally sighed. "Show me where his tracks went and where they end. Maybe he fell through a trap door or something. But if we can't find anything, we turn around and come back this way."
Celeste nodded, and headed over to the place the tunnels branched. "His tracks go down the left branch. Can you see where it makes a fairly sharp turn, a little ways down? That's where his tracks ended." She points out where they are. Faint tracks can be seen by those looking closely.
Examination of where the tracks ubruptly end reveals no evidence of trap doors or any other means for a swift departure. Apparently, Tommy vanished into thin air.