Clan Cairngorm
A small clan of Stone Giants living on the outskirts of Gracklestugh. One of their own went mad of unknown causes and rampaged through the city, killing a member of the Stone Guard in its panic. The adventurers sought out the source of the magic on behalf of Hgraam, the Stonespeaker for the clan. They did so, but not until another ritual had started, driving another of the giants mad.
In return for their aid for finding the source of the madness and for keeping the second giant calm during the onset of the ritual, Hgraam rewarded the party with a Stonespeaker Crystal