Found a quest with a mob named Norvakess that gives 100k exp per kill (190k rested) and you can repeatedly kill this mob, he has 3.26m HP but you gain a huge damage buff killing him within 30 seconds. his respawn time is 60 seconds. if you can kill him before he submerges you get a huge profit over running to quests and doing them for your last 2 levels.
http://www.wowhead.com/npc=62324/norvakess
http://i.imgur.com/jKiZLzB.jpg