Finally away from the snake statues, whether because he's managed to slip by or because they were defeated, Lyall has the scent-- well, he has a scent. A fleeing human-ish scent that doesn't match anyone here, and a scent he hopes is David Proud's.

He's hurrying down the tunnelway in its wake with a flashlight, trying to block out the other scents around him and the sounds from behind him, and just jog through the dark, debris-littered tunnel without tripping and breaking something.