Witch graves within the city

Vigrid is littered with the legacies of an ancient age. Amongst these are the stone coffins used to bury departed witches.
Along with their fellow overseers of history, the Lumen Sages, the Umbra Witches used their incredible powers to repel any intrusion upon Vigrid.
The witches abode by the terms of their contacts, and upon parting with the physical world. The strongest of the witches were defined as guardians, and buried in stone coffins throughout the town. These stone coffins are sealed tight, and it was said that only those of knowledge of a witches magic could open them. Even during the witch hunts, when the coffins were subjected to attempted demolition, not a single soul was able to peer into the contents within.
Acording to one contact with their demon master stipulates that upon leaving this earth, a witches soul nor body can remain. It is said that Umbran burial customs were developed for that very reason. The women would bury their loved ones in treasured stone coffins to lessen the pain of those destained for inferno.
Today, unable to break the magic seal, it is placed with the Lumen Sages seal of the sun which means, if the witches did return they would be unable to open the coffins.