Before Time began, a great mountain of Truth called “the Spike” sat at the center of the world. During the Gods War, a Chaos army invaded the Spike and their profane nature caused it to explode, sending pieces of “truestone” hurtling through the cosmos.
One huge chunk bounced off the sky and hurtled to earth. It landed in Prax where the Storm Bull was wrestling the Devil. The huge rock smashed into the Devil, smearing him across the plain and removing him from his body.
The rock, now called “the Block”, still sits in Prax, a half-kilometer on each side and two kilometers tall, flanked by hills of dirt. Beneath are the Devil’s remains, eroding under the ministrations of the Good River.