|Source||Eberron Campaign Guide, pg. 150|
Ten million years ago, Eberron entered the age of demons; a world where the powerful evil fiends, known as the Overlords ruled. Khorvaire was controlled by these fiends, with their followers, the demons, rakshasas, and hags. However, the dragons of Argonnessen and the couatls of Xen'drik joined forces, and purged the world of the Overlords. Their citadels fell, some abandoned, and some with the fiends trapped within.
In the land now known as Q'barra, three major citadels of the fiends fell: Ka'rhashan, emptied of evil and now the home of the dragonborn; Haka'torvhak, home to the trapped fiend Masvirik and the corrupted dragon Rhashaak; and Mar'saval.
Once a great temple of brass and granite, Mar'saval sunk beneath the Basura Swamp. Powerful enchantments prevented the water and silt from seeping into the citadel. Local lizardfolk tribes often leave tributes to their draconic gods at the sunken minarets of Mar'saval.
There is one entrance to Mar'saval above water, and some say that one clan of lizardfolk has taken to live within Mar'saval: the Fallen Bones clan; however, rumors say that this clan has been corrupted by Mar'saval, and have devolved into feeble creatures. They say that the Fallen Bones clan have allied with troglodytes living within the ruins.
- ↑ 1.0 1.1 Player's Guide to Eberron. James Wyatt, Keith Baker, Luke Johnson, Steven Brown (2006). Wizards of the Coast. ISBN 0-7869-3912-5.
- ↑ Eberron Campaign Guide. James Wyatt and Keith Baker (2009). Wizards of the Coast. ISBN 0-7869-5099-4.