Actually as of March 8th, a new solo instance was introduced into the commonlands, called "Valley of the Rogue Magi" or some such, I do know this instance starts in the the xroads, at the centre pyramid stone on the wanted poster, you are then instructed to go see a merchant, whom is located up by valmar in a hidden area just by the mouth to the Vulriches, he'll instruct you to gather items for him from Oasis Fungi for a potion that you can get that helps you through the stones. Once you get this potion you can rebuy it from him for 27c and re-enter the zone when you like. So far a few fairly good items have dropped for me, though I've only attempted this instance once, and at lvl 21 all monsters were green to me, but when mentoring, at 15 they turned, blue orange and yellow. Give it a try it seems to be a really good solo or small group instance. Sorry for the lack of details, but they'll come as more do the instance. So far there are no mobs in this zone.