Gathering their belongings, the group still on the far side of the water-filled chamber decides that the best way through is simply to hold one's nose and swim. After a bit of testing it becomes apparent that the foul-smelling water, now made even more noxious by the strange mass of deceased ooze, is only 4 feet deep. Everyone is tall enough to simply jump in and wade across.
Once everyone has made their way across, the group climbs onto the platform situated in front of the exit door, and makes its way to the corridor beyond.
The corridor is about 10 feet in diameter and looks to have been made a long time ago. This level was simply carved out of the rock of the Promontory, and the walls look to be solid rock covered by masonry. The corridor continues in a south-easterly direction for about 40 feet before it runs into an open portcullis. This rust-pitted defensive construction hangs open above the corridor. Obviosly meant as a deterrent for invaders trying to enter the keep through the sewers, it appears that it was left open at some time in the distant past and has now rusted in place.
A few feet past the portcullis there is a break in the right-hand wall which seems to lead to another corridor which runs parallel to this one. The hallway the group is currently in continues for another 20 feet before making a 45 degree turn to the south.