Underground Water

"Li... Little girl, then how did you come out?" Wu Qianru tried to ask further.

"Ah, I have no idea. I slept for a moment and when I woke up I was already underground. I then started digging a tunnel, and kept digging and digging and after a long time I was able to emerge onto the surface." The little girl spoke as she tilted her head while she was recalling the incident.

The two ladies were frightened after listening to what she had said and even though what the little girl said did not seem to be in proper English, it was still comprehensible. What exactly had she experienced during the disaster?

She could have possibly been hurt by the nuclear missile shockwave while she was asleep and by the time she woke up, without a doubt, her body would have been buried by volcanic ashes as the lava cooled down.