You enter the structure, and bright light greets you. The antechamber is wider than it is long; about 30 metres wide and 20 metres deep. There are four doors: 2 in the wall to your left, 1 in the wall to your right, and 1 straight ahead. The floor is something that looks like marble, though it is not very wel kept. Cogwebs hang from the ceiling, in the corners of the room, and in the what once must have been impressive chandelier.
Corpses, some reasonably fresh, some so decayed s to leve only the skeleton, litter the floor. Some of them are curled up in a position that would make it seem they are still in pain. Their mouths and eyes still wide open, grasping for their stomachs or an arm, even though they are completely motionless.
The most impressive sight however, are the walls. The walls are clean and wel kept, and are fully covered in writing, and seem to be the only source of light in this room. Every letter sheds a little bit of light, less than a match, but all the letters together light up the room to make it seem like daylight.
You all stand inside, just a bit away from the portal. Looking back, it is really dark outside.