The sniffling stops. There is the sound of rocks scattering as if something is attempting to scramble away.

The crack opens up almost immediately into a narrow tunnel sloping upwards. It's a bit cooler than the one the group had initially set off on - if Imogen glances up, she may find that it narrows so much that it's almost impossible for someone of her size to proceed.

The tunnel is quiet.

Until another sniffle comes from the corner.