((Sorry about the wait! Apparently notifs don't show up when a thread is screened.))

Almost as soon as Imogen enters the cave, her superb night vision will note an offshoot of the tunnel leading off to one side - it's impossible to see under normal lighting conditions as it's hardly more than a crack in the wall.

Her companions are about to find themselves in imminent danger, but what is of greater concern, of course, is the fact that if she listens carefully, there comes the faint sound of something... sniffling?