So it is written;
in the days even before Old Khepathia, the tiefling race had already been long enslaved to its infernal identity and its covetous passion for power long unbridled and unrestrained, threatened to consume its smoldering future lest remedy for their foulness be discovered. Hordes of dwarven and minotaurian slaves then bowed before the tiefling whip and, as they were then called, the Tai Lia Overlords had no capacity or vision for mercy and continued the relentless tyranny. It was in this setting did the Volcano Erythia become manifest then in an effort to mine the stuff known as cathoid, a treasure that preceded gold as currency of the young realm.
Orotyr was dug from under the bones of the volcano as an immense labyrinth that would house the thousands and thousands of slaves of the lesser races that were not permitted to live in the City of Khepathia that grew following the great mountains’ construction nearly five millenia hence prior.
for a thousand years, the reactor core of Erythia pulsed with the energy of a star at the mountain’s center, until finally the slaves rose against their masters and made war with the Tiefling. In this terrible century of fighting, the minotaurs were lost as a people and although existing in sparce numbers, again now just exist not as a coherent extant culture to this day.
The reactor core is lost as technology and in even location. No one knows even where it is, let alone the magics that bind it to its reliability. Should some power attempt to harness or release this ancient magic, the end of things as they are would surely be realized.
Chronicles of the World of DaoTyr 