The term Sepulcher makes me think of a place of interment for a single person or family Where as Catacombs might be filled with many Sepulchers. The Latin meaning is bury or burial place. What kind of hangs me up on the place is the Litch saying it had grown full or swollen up with death energies. I could see the location continuing to fill with death energies if dead were continually being buried there. Seeing how the location was completely lost to the world for sometime I don’t see how it could grow in energies. Although the location had not been used for some period I would think it had been depleted of death energies during the war that led to its destruction. Energies are normally used up at much higher rates then they can be gained unless there is a continuous flow of energy. I do understand that Aleron has written about death saturation and death energies saturating lands. Shouldn’t such lands have limitations of only those residual energies that reside there? Other wise such locations would need a tether to a constant source of death energies. The Sepulcher must have some other type of functions or wards that prevent other types of death creatures from naturally spawning. I think it would most certainly have some type of protections in order to prevent other death creatures from finding it and inhabiting it like in the pillar of light tomb. My thinking is it’s tethered by some sort of summoning circle or portal to a realm of the dead. That way it might leak death energies through that could be contained and used for summoning points. Then they would have near an unlimited access to dead warriors from their after life.