The higher they got, the ground began to rumble again, and then there was light, bright and piercing, as the surface slowly opened for them again. Neville had to hold his arm out to block that fierce glare, to keep it from blinding him to the final steps before him. With the other, he'd held onto Luna with a fierce grip—having spent so long in the dungeon she’d grown unaccustomed to daylight, and had staggered and gasped when it struck them.