Caedmon continues past the point where the rung ladder ascends to the top of the tower, carrying the light with him. The passage is straight enough that Marin is not left in the dark, though it does get noticeably dimmer where she stands.
The east passage continues for about eighty feet--far enough that Caedmon is certain he is no longer under the walls. It then opens into a similar forty-by-forty room. Like the others, this one is stacked with provisions, but unfortunately, the firewood once neatly stacked along the south wall has been largely devoured by insects, and the water barrels carefully arrayed by the north wall are dried up. The east wall is the only specimen of wall space in these three rooms that was not packed to the gills with supplies.