The avalanche. This is one of my top secret "Rogue" farming spots for pickpocketing to get boxes (lvl 350 boxes), and runic healing potions. Gobs of them. But fighting the mobs is not easy with a melee combat Rogue, so I stealtyh around and mash my pickpocket macro. if you had a tank pally or druid with gobs of health and armor, I'm guessing you could stand there all day and fight and loot. Time to loot would be a problem though.
People will pay 5-10g PER Reinforced Locked Box, and the Runic Healing Potions (and 15-50s per loot) you get are very helpful. It's not a huge Gold/hour spot I would guess, but it depends.
The TOUGHEST lockpicking levels used to be from 350-400 until I found this spot. But Shhhh....don't tell anyone!!
That's fairly awesome, always like a nice farming challenge, will give it a go on my rogue, thanks.