"Watch out!" Diana shoved Grace aside as a chunk of ceiling crashed down where she'd been standing seconds before.
The tunnel shook violently. Dust and small rocks rained down as cracks spread across the walls and ceiling. What had started as a minor tremor had quickly escalated into a full-blown cave-in.
"Move!" Diana grabbed Grace's wrist, pulling her forward as the passage behind them collapsed with a deafening roar.
They sprinted through the increasingly unstable tunnel, dodging falling debris. Grace's wings knocked against the narrow walls as she ran, sending sharp pain through her shoulders.
"The tunnel's collapsing!" Grace shouted unnecessarily.
"No kidding!" Diana shot back. "Jump when I say jump!"
"What? Why would I—"
"JUMP!"
Grace leapt without thinking. A massive section of ceiling crashed down exactly where they would have been. The impact shook the entire passage, sending more cracks racing ahead of them.
