Beorn agreed that the place was absolutely impregnable on that side, and that it could only be attacked from the hillside, and by carrying the walls in succession.

"Well, there is nothing more to see," Wulf said, "so we may as well return. You see there is a large village nestling down there just at the foot of the rock. We could not see it from where we were before.

"Well, Osgod, have you seen anything going on in the castle?"

"No, my lord, everything has been very quiet It seems to me that there are very few men about for such a strong place."

"No doubt most of them are out in pursuit of us, Osgod; we know that the country was roused by the beacons, and that there must be a big force somewhere in the hills. I only hope they wont find Oswald and Edred, or I fear it will go hard with them. The levies fight well when they have the housecarls with them, but by themselves and in a strange country I am afraid they would lose heart. Now, Beorn, I am going down to the wall on this side. We can see that there is no sentry on it, and I want to find out if there is any other defence besides what we can see. It is very important to know that, as we agreed that this is the side from which the attack must be made."

Descending among the trees Wulf cautiously approached the wall. He found on nearing it that a perpendicular cut some thirty feet wide and twenty feet deep had been made across the rock. It stretched from the foot of one flanking tower to the foot of the other, the wall between them being some ten feet from its edge. Having ascertained this he returned to Beorn. Having told him what he had seen, he sat looking at the castle.

"What are you thinking of, Wulf?" Beorn asked. "I suppose we had better stop where we are till nightfall and then make eastward."

"I am thinking, in the first place, that it would cost a great number of lives to take that place by assault."

"That it would," Beorn agreed. "We have seen no place of anything like equal strength in Wales, or indeed anywhere else."

"There is no doubt about that," Wulf agreed. "If well defended it ought to hold out for weeks, for when we have taken that wall in front of us only a third of the work has been done. In the next place, I am thinking that Llewellyn and the greater part of his garrison are away in the hills."