Telchar, its the south-western area in the general map. You can get there exiting from the "back passage" of Nashkell mines. Its good to go there when you exit the mines coz youve got loads of xp and good items (though fights are difficult too). There are 3 great fights in that map, all of them with good rewards.
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"Captive, captive... captive in heaven" -Ertai, Captive of the Blinding Angel