Well, that would have been too easy, he supposes. Childermass sighs, turning back to eye the wall of crystal. He searches the space within, picking out what shadows do exist within it.

"Hold on," he warns the others, then steps over into a shadow outside the wall. He makes the attempt, only when he reappears it's on the opposite side of the room and most definitely not in there with the rose. At that, he scowls. So much for that. "We cannot teleport in, either..."

He says that louder than he normally would, so it'll carry back to the rest of the group, then shadow-steps back over to them again.

"We need to test the wall, then. Physically."