They stepped from the lift and made their way along a short corridor, which led to a single, large room. Hermione lost her breath at the sight of it, for they were now standing at the top of a bowl-like amphitheatre. It was made from dull viridian stone, and a dim source of light shone from a point high in the cavernous ceiling. There must have been seating space for several thousand people in here. But, right now, it was silent and deserted.