It is immediately evident that it is a very deep chamber, running back farther than the eye can clearly see into darkness. There are two torches burning just inside the archway which illuminate a cramped array of dismal bunks, hacked three high into the walls, and running back beyond counting, like so many vertical graves. Fortunately, they appear to be disused right now, but where are all the Goblins that could bunk here?
The floor space between the walls are littered by a shambles of crude furniture, a filthy armchair, a rough bench surrounded by a few stools, a crude wardrobe... but most importantly: a pack of Goblins are scampering off squealing, deeper into the unlit recess of the great hall. They are already 90ft away!
The ref dices to determine how many Goblinkind were originally present: 2d6 → 10, less the 3 that pursued Wetzel, leaves 7.