The group spent the night in a storage room, with an arcane mark on the wall. The wizard studied the mark, and his new ring. While he was wearing the ring, and was within a few inches of the mark, it would disappear. After a few tests, he decided that the mark was just an Arcane Mark spell cast on the wall in the shape of a door. The group decided to explore some of the tunnels to the west, and were ambushed by a pair of strange monsters. After dispatching the monsters, the group decided to explore some vents near the ceiling, and discovered a corpse that was wearing mithral chain. After nursing their wounds, they went back to the storage room to rest again.