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Obscuring Knowledge
Recommended	Level: 70
Starting Zone	Upper Halls of Fate (Kingdom of Sky)
Starting NPC	Item Triggered
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This is another in the "Claymore" line of epic quests. It becomes available once you have completed "Feeding the Flames".

It is initiated by clicking one of the four sconces in the first Atrium area of Halls of Fate. Yonar the Dromunculus spawns and tasks you with sealing the Prismatic Lexicons within the Halls of Fate. These are oversized tomes that are tucked in various corners and nooks inside the instance. After collecting all ten tomes, you will then be required to obtain ten more in The Laboratory of Lord Vyemm, the Epic raid instance.

The locations for the Lexicons in HoF are:

Volume I 130, 3, -140
Volume II The ledge above Ishtaran the Skarize AKA Table guy
Volume III -10, -69, 284
Volume IV 6, -69, 360
Volume V -52, -58, -112
Volume VI -129, -67, 446
Volume VII -15, -68, 463
Volume VIII -30, -68, 395
Volume IX -92, -68, 475
Volume X -4, -69, 274

The other ten books you need are in the Labratory of Lord Vyemm and are very easy to spot. Oversized yellow books scattered throughout the zone. Would have the exact locations for you if I had time to record them during a raid.
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