Yes.

[Trevor noticed, but he hadn't considered them to be anything of importance until Adrian mentioned them just now. He'd just taken them for markers to the exit passages, but stopping to consider it again, perhaps they are something a trifle more significant.]

Do you think they have something to do with the forged creatures?

[Trevor pauses to glance over his shoulder to Adrian, then continues his work until he has a fire stoked in the oven as well. He leaves Adrian to his magicks with the oven, and moves on to the hearth in the parlor.

It makes sense, really. Not that he's questioning Adrian's judgment at this juncture, but it's rather easy to jump to conclusions when one is nervous, as the dhampir clearly is. But it stands to reason that the skulls are some manner of delineation. Trevor can't remember, wracking his brain though he is; he's no expert on forgemaster magicks, but perhaps there's something in the vault.]

Are you familiar with forgemaster magicks? I can't recall anything about gold marking a boundary, but--