I was level 13 at the time. I'm now level 14 (killed a level 15 boss w/o major issue while level 13). Eventually I'll get back there. It doesn't help to have that shreaker blocking the teleport area. I don't know where my purging wand was, guess I accidentally sold it to some merchant.

Every time there I run into trouble on the road, there is always a dwarf at the bottom of it. Don't they know how to drive above ground?