Term given to the fused-stone constructions of the First Ones. A substance unequaled in its hardness and smoothness, noone living has the skill to work this stone. The closest any have come are the Dwelv, who closely guard the secrets of Uldencraft.
Impervious to all known methods of destruction until the rise of Calling Ceremonies during the Wars Against the Lightless. A small chip was found in The Deeps by members of the Ward Watch on a mission to destroy a Cyst thrown across the walls of Ul-Solaris during The Night of Screams. A foul Calling Ceremony was interrupted during which several members of teh Darralis Family were purported to be participating willingly alongside the Changed Ones. The blood of the sacrificial victim was corrosive to the Oldstone.
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