Constructed by inhuman hands, only a small part of the fortress rises upon the slopes of Mount Nyisaid. The larger part of the citadel lies within the mountain, spread through great caverns and halls. The smoke of numerous forges and laboratories rise from the fortress like eerie pennants; and spiked towers and precarious walkways mar the higher slopes. At the top of the mountain, the iron statue of a huge Hellknight guards a gate for flying visitors. The citadel includes garrisons, training halls, armories, libraries, workshops and fortifications. Tales also tell of a prison for terrible creatures within the citadel which resembles a pit into a black eternity.
The creation of the citadel was funded by the wizard Sheel Leroung who was a political ally of Daidian Ruel. In 4599 AR, Lictor Aligois Thels granted the wizard 20 Hellknights into the western reaches of Menador Mountains on a private venture. In return the nobleman wizard funded the construction of a new Hellknight fortress there.
- Jesse Benner, Jason Nelson, Sean K. Reynolds, Owen K.C. Stephens, and Russ Taylor. (2011). Inner Sea Magic, p. 26. Paizo Publishing, LLC. ISBN 978-1-60125-360-6
- F. Wesley Schneider. (2009). Path of the Hellknight. The Infernal Syndrome, p. 69. Paizo Publishing, LLC. ISBN 978-1-60125-198-5
- F. Wesley Schneider. (2009). Path of the Hellknight. The Infernal Syndrome, p. 66. Paizo Publishing, LLC. ISBN 978-1-60125-198-5