Closer (Tunnels: Book 4)

Waves of flame, red through white. Hair singes, skin contracts. The sound of a rushing, howling gale as all the oxygen is sucked from the place, then the splash of water as Rebecca Two throws herself into the pool, taking her sister with her. Stunned and barely conscious, Rebecca One’s body is limp like a rag doll’s, but even the chill water fails to shock her to her senses.
They sink below the surface. Beneath the intense heat. Rebecca Two clasps a hand over her sister’s mouth and nose, in an attempt to seal them. Then she forces herself to think. Sixty seconds at the outside, she tells herself as her lungs begin to strain. What now?
She glances at the raging inferno above, waves of crimson
refracted by waves of water. Ignited by Elliott’s charges, the
bone-dry vegetation is feeding the firestorm, clogging the
surface of the pool with thick black ash.