This area connects to the building containing the Chandelier Room. The Courtyard is below it. Head to the next set of Idol Doors and go through and out onto the pathway atop the front gate. Run along the pathway until reaching the corner, then up the steps and continue on toward the distant doors of the East Arena. There's a ladder to be seen on the right as they draw near, which should be ignored for the time being. Send them through the Idol Doors and into the East Arena. The doorway is sealed behind them and you're given a glimpse of a sword stuck in a wall high above. Head to the nearby ladder on the left and climb up, then have Ico call Yorda up after him. This triggers another attack by the shadow monsters. But again this battle is not overly difficult. Dispatch the enemies, then move to the stone couch and save your game.

Walk along the wall to the left of the stone couch that supports the stairway and continue through the doorway, then turn left and walk to the ladder and descend. Walk over to the cylindrical stone block with the slowly pulsating ring on the top. Have Ico climb up onto it, then move to the edge and call to Yorda. He'll then help her up onto the top of the cylinder, causing it to sink into the floor and raise a room wide staircase, that allows access to some torches and a switch at the other end of the room. It'll also cause two black pools to appear near the ladder and another one at the top of the newly raised stairway, and he'll have to fight some more shadow demons. If Yorda's abducted, she'll be taken to the black pool at the top of the stairway, which is the farthest away naturally. Once the nasties have been taken care of, have them mount the newly created stairway and pull the lever to cause the two smaller stone circles behind them to open. Light Ico's staff and then stand just to the side of the opening (you may have to nudge him around a bit) in the small circle that's closest and he'll light the contents. Do the same with the opening on the other side to open the large circle and provide egress outside. Climb up into the bottom of the large circle, pull Yorda up and head outside. Walk to the right and sit on the stone couch and save your game.