Most of the papers have been torn into pieces, but the largest, most intact fragments are almost as big as Thorg. Jerolan can carry two or three such fragments without overly inconviencing himself.
In the light of the dagger, the party can see that the tunnel slopes downward and to the right, heading deeper toward the mountain. As they walk, the tunnel's size varies only slightly, just large enough for the tallest of them to walk, arms outstretched on either side, without touching the walls or bumping his head. About a hundred feet in, the tunnel opens out into what is obviously an artificial chamber -- carved from the stone, it appears to be a perfect cube, each side almost as long as the tunnel from which they had just emerged. Dim rods are stationed equidistant around the room, shedding a dim light that does little to enhance that supplied by Jerolan's dagger.
There are two identical iron doors set into the walls across the room from the party, one before them, one to their left. In the far corner of the room huddles a large rat, presumably the creature they followed into the tunnel. Its back is arched and its fur stands on end as it watches the interlopers warily, but it makes no move to attack.