when zoning into chardok, take the main path towards the exit, just before the exit tunnel, there is a tunnel that you can levitate into. use that and stay on the RIGHT path until you get to the second fork in the tunnel. at the second fork, take a left and there will be a bank. go to the right side of the bank and there will be a tunnel...im not sure of the rest of the way, but things from that point on start seeing invis :) but the apprentice herbalist is right around the corner