When kunark first came out on p99 there was a quest with the marauder snout rings that gave massive xp.
Because we are who we are, it was greatly abused and the first patch after kunark it was nerfed severely.
Looking up snout rings there's
http://everquest.allakhazam.com/db/item.html?item=1846 that talks about it, especially in the comments about how good the xp was.