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When the fortress of Zhaman (occupied at that time by Fistandantilus) crumbled on itself, leaving a structure with the shape of a human skull. Zhaman was subsequently renamed Skullcap. Located between the Northgate of Thorbardin (now destroyed) and the realm of Qualinosti (plains of Dergoth).
- Margaret Weis, Don Perrin, Jamie Chambers, Christopher Coyle (2003). Dragonlance Campaign Setting. Wizards of the Coast. ISBN 0-7869-3086-1.
- Margaret Weis, Tracy Hickman (May 1986). War of the Twins. TSR. ISBN 0-7869-1805-5.
- Margaret Weis, Tracy Hickman (8 May 2007). Dragons of the Dwarven Depths. Wizards of the Coast. ISBN 0786942614.