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1 " For the briefest of instants, a miles-wide hole appeared from the middle of the Earth to the top of the sky. The Moho rang like a tuning fork in harmonic response to the billion megaton impact. Seismic waves propagated in all directions, some dampening as normal, others amplified harmonically as Earth’s interior quivered like a bowl of pudding. Seismometers spiked wildly, their needles bouncing back and forth like pin-balls.A billion megatons exploded outward from the depths of the quivering Moho blasting a crater eighty-five miles in diameter and spewing billions of tons of superheated rock twelve hundred miles into space. In the blink of an eye the Earth grew a tail, as a mushroom cloud visible from Mars formed and spread, black as the Devil's eye. "
― Raymond Dean White , Impact (The Dying Time #1)
