The tunnels are much of the same. Grey stone walls with the occasional niter patches on them.
[sblock=Perception 18]There is the sound of something ahead. The something is large and it it moving around in the muck of the sewers. It does not sound like it is coming closer.
[sblock=Perception 27]Below the racket caused by whatever that thing is, you can hear many other creatures in the same area.[/sblock][/sblock]
[sblock=Eithal]You can tell the blood is human and fresh. It stands to reason that it belongs to the boy, but you've no real way to be sure outside of a DNA test or a really good bloodhound.[/sblock]