Soryn finds that simply walking to the eastern wall is a bit more difficult due to a collapsed bit of wall from the cavern. He has to climb over several large boulders, avoiding a few that are so tall, they almost reach the roof of the building, and finally coming out on the other side of the rubble.
The eastern wall is equally featureless, save for a few scratch marks where the rocks falling from the cave-in scratched the stone wall. One of the larger boulders is leaning against the wall, but didn't break through. Clearly, the walls are sturdy and thick, and breaking through them would be a complicated and backbreaking task in manual labor.