Around 200 000 years ago, the planet Telios Prime was impacted by a large metallic ore asteroid, with origins in the Shissian Belt. The resulting impact had devasting results for the planet, and resulted in the creation of a single land mass from the original two, as well as a partial solidification of the planet's mantle. The surviving Telians have since this time labelled the incident The Cataclysm. It has also been referred to as The Great One in older texts.