If a goblin captive could pout, the one leading the adventurers from Kjuriyo was doing so. Walking slowly a few steps ahead of Dossk, resigned to his fate, the goblin leads the way through the roughly dug tunnel away from the cavern beneath the old well.
The tunnel curves slightly back, forth, up, and down, but seems more likely due to the difficulty of digging a straight line rather than any particular plan.
For the last hour, a dull roar has been looming from farther down the tunnel - a sound almost familiar to those who live near waterfalls, but within these caverns the echoes make every sound reverberate in an unexpected way.
The last turn is the sharpest, but conveniently sits about 15 feet back from a large chamber.
The tunnel leads down into the chamber, narrowing to a ledge path that opens precariously to a mist-shrouded gathering pool, probably a drop of about 20 feet. Across the chamber another wide tunnel leads into the room, although from that one a wide river of water washes in, creating the powerful waterfall heard for the last hour.
A careful peek upwards allows the slight view of two ledges opposite each other, perhaps 200 feet above. From one, the base of a drawbridge can be seen, although it is currently pulled up.
Reluctantly, the goblin points down to near the current tunnel opens into the room. "Around corner is makeshift wall, door into guardroom. Bit more around corner is spiral tunnel to up above; likely portcullis is in place. Key usually with guards in room."