With a pat to Donnie's shoulder to keep their backs covered, Tony stepped through on careful toes to try to get a sense of what they had just run into before anything had the chance to surprise them. The vines had taken over here, too, spread like wires across the floor and climbing up the walls, keeping some of the bricks held together where the plaster had crumbled away. What he didn't see was any movement, even when he risked plucking up a pebble from the cracked floor and tossing it into the darkness beyond the next arch. He could hear it land and clatter away, without any response of beating wings.