Hi,
1) Open quest: Act II: The Road to Alcarnus > Lieutenant Vachem
2) Teleport "Kashim Outpost"
3) Just follow the quest: Talking to Lieutenant Vachem
4) Kill the mobs in the cellar > Open Cage > kill the mobs outside
5) Receive 50k xp and 1230gold from quest reward
6) repeat
i did that with my barb from 59 to 60 in 52-55seconds.
pretty simple, but didnt read it anywhere yet.
btw firstposter (and not an english speaking native