Battle Axe Quest/Spoiler

Required Equipment

 * Pick
 * Rope

Method
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 * Enter the sewers just outside the Thais depot. Head South to the first long path to the West. At the end of this path (West and then South), use the pick on the ground (East side, 3rd square from the end of the tunnel):
 * Down the hole, you will find the Battle Axe in a dead Skeleton.