The Kolinahru were an ancient group that were known to be one of the most powerful, as well as cruel, factions that existed on ancient Vulcan. Their mind lords were known to be capable of killing an enemy by making their blood literally boil in their veins through pyrokinesis. The legends of their wanton acts of individual or mass mind control have spawned legends that still haunt Vulcan today. (Last Unicorn RPG module: The Way of Kolinahr: The Vulcans) They were known to reside in the region of Gol on their Vulcan home planet. (TOS novel: Recovery)