Oramond Western Plains

For best exp follow the route on the video, keep luring as many monster as you can and attack them with area spells and runes. Diamond arrows are great here (try to attack more than 8 creatures at a time).

Earth protection equipments are recommended.

The loot is quite bad here so dont bother looting or just try to loot the green/blue items that you find. The loot aspect is compensated with experience and multiple charms you can complete.