Throughout human history, various accidents have occurred relating to experiments with Inter-realm transit technology. Some of these accidents have been serious enough to qualify as a Flux Event.
When these events happen, a large amount of inner-realm Essence flows into our reality. This causes a reaction that warps and twists both organic and inorganic material.
The most notable event occurred in 2350 PC, when the city of Highland was all but destroyed over the course of a few weeks.