"Best figure out a way out of here, first, before you go setting the damned place on fire," Draco commented with careful casualness, looking around the enormous cavern without much hope in his eyes, and they all sank into sudden, grasping thought. Ron paced and Harry gnawed at his lip, and they were all painfully aware that up above them somewhere the remainder of the Order team were trying to hold off the Death Eaters, and they had to get up there soon.