Old Commorragh

So The Dark City was built way before The Fall. Does this mean that much of the Old City, the core at the heart of the Webway realm was built using Wraith Bone? This being the material of choice for all Eldar craftsmanship does it stand to reason that originally the city was built from this material? This being said would the psychic energy coursing through such material be of danger to the True Kin after The Fall? Would it put them at risk to the gaze of Slaanesh? Might the Deldar have been forced to demolish everything post-Fall? Would Wraith Bone objects be proscribed as dangerous today? Fluff seems to say no as the Deldar once used Wraith Bone as ammo ion their Terror/Horrorfexes. But this has since been swept under the rug.

I'm wondering if some of the old noble houses turned survivor Kabals might still reside in palaces made from Wraith Bone.

I assume not. Concentrated Psychic activity in the Webway probably wasn't much safer back then.

I am unaware of the Craftworlders using wraithbone building materials inside the webway, though they assuredly transport it through there.

My presumption would be that if the Craftworlders don't do it now, that the True Eldar didn't do it then.

Wraithbone is a very precious material and you pay a high price for that (Terrorflex Grenades and all kinds of weird Haemonculus stuff). If it really existed in the past, it has surely been stripped away since then.

I wouldn't, however, rule it out entirely; especially in a sub-realm that is sealed off from Commorragh proper. After all, everyone knows precisely how bad concentrated psychic activity in the Webway is, so it stands to reason they had to find out somehow.

If you could make a cool display piece with it, rock on!

The chances are if any wraithbone buildings ever existed in Commorragh they were in the core and got flattened by Vect when he took the city. so I'll just assume that the answer to my question is no.