You all leave the river of filth behind. As you approach the place where the others squeezed through, the sound of footsteps tells you that the duo is proceeding down the tunnel. You don't have as much issues getting through the narrow passage as the barkeep seemed to have, and manage to follow behind.
Keftar throws his log through the hole before following it and reconnecting on the other side.
OOC:
Everyone give me a roll of either
presence or
agility DR 12 to see if you can either stay far enough away to not be noticed or move silently.
If you're not bothering to stay unnoticed, just say so and the NPCs will notice you.