Cant find desert 15 point atrribute quest. -done everything, wont unlock, stumped.

Ive been looking for a while for the desert 15 point attribute quest and so far I hear its supposed to be in destinys gorge. However, there are no quests there at all for me to do. Ive ascended, Ive done the other 15 point att in droks, and Ive beaten the game. I figure that the problem must be that Ive somehow missed some arbitrary quest somewhere along the way that for some reason is a prereq. So can anyone tell me all the steps needed to unlock the quest ?

The 15 att. quests are both two part quests. The one from Destiny's Gorge is started by a forgotten (snake looking dude). He gives you Forgotten Ones, which is a quest to go find his brother (Sliss Yashath, or something like that). His brother then gives you Forgotten Wisdom, which is the actual 15 pt. quest. Sounds like you may have done the first half (if it's true what you say that you cannot find any quests in Destiny), but may not have done the second part from his brother.

For the umpteenth time (okay, search doesn't work most of the time) :
http://gw.gamewikis.org/wiki/Attribute_quests
and more precisely :
http://gw.gamewikis.org/wiki/Forgotten_Wisdom

toodles