Deep under the ground, rising magma, lighter than the rock that contained it, began to stir again, as it had so many millions of years ago. 'Twas a miracle that the volcano had slept for so long; long enough for a civilization to build itself upon its results. But the alarm had rung long ago, and the volcano seemed to realize that it was really, really, really late for work.
Erika Darknight lounged across a chaise in Celestia's Royal Guards' Headquarters. Laying in front of her was a book, about three inches thick, with dog-eared pages and questionable stains marring the perfection of the novel. It had been ages since the guardspony had been given a chance to idle, and even at that, she wasn't merely idling. This book, after all, was the second in the Erika Stormborn series, and, despite her rough-and-tough reputation, would never give up the chance to read a new book about her absolute favorite character (and her namesake), especially since the first one had come out when she was a foal.
Which is why an angry scowl crossed her face when the ground began to shake, flipping the pages until the book fell clean to the floor in a mess of flying pages. If Golden Scythe was experimenting again, she was going to rip his head off and toss it into Celestia's sun.
Then another tremor shook the ground, and she let out a cry of surprise as it sent her sprawling. The screams of other guards rand throughout the castle as things went crashing to the ground, and Erika realized that it wasn't an experiment. It was something much more sinister, something ancient and completely natural.
Which was why it frightened her so much.