Time Ring Quest/Spoiler

Required equipment

 * Machete

Method

 * Find your way to Shadowthorn and enter the hole here.
 * When coming down, head west.
 * Down the ramp you will find several Elf Arcanists, several Elf Scouts, one Ghoul and one Demon Skeleton.
 * The three quest boxes are located in the north end of this room.