I'm a bit crazy, but...
Ilshenar, Spirituality region. No hostile spawn (unless you get too close to Blood dungeon, in which case, have the spawn chase you into the Oaks spawn and let the pixies/ki-rin/unis kill it), an entire unoccupied mining cave, and a forge & anvil half-way between the gate and the spawn.
Also a good training area for learning to use gargoyle pickaxes (nearby shrine to rez if a paragon jumps you, and again, if you can't handle the ele, have it chase you into the oaks spawn for the spawn to kill it for you. You then loot the ore, and go back to your business. If the elemental is in the cave, just exit the cave, and eventually someone heading to swoop will kill it).