In 2.101.997.M41 During  a termite expedition by a Deathwatch Kill Team 2176 fathoms into the Carpathian crust, psychomagnetic distortions were detected hinting at the presence of a void field.
Later investigations by adeptus excavators revealed the outer butress structure of the ferrocrete frame of the ancient Void gate "Ultra Silvam"
The first contact with the gate was problematic, when the first teams were within meters of the gate the heads of the adeptus excavator crews, servitors and cogitators alike all exploded in a psyconic wave of gore, numerous attempts were made at approaching the gate, with the same dreadful effect.
Only Hadessong himself equipped with a psychic hood was able to approach the gate, his sacrifice that day will be remembered forever amongst the peoples of Carpathia; Lord Inquisitor Hadessong was the first human in millennia to cross the Ultra Silvam and reunite with the indigenous peoples of Carpathia.
It was then up to Hadessong's replacement Inquisitor Lord Xemplaarmentaarius to oversee their reintegration into the Imperium of man......