Under a bedroll in the Sabertooth Hideout area of the camp called The Sabertooth Den located right next to the secret zone behind the waterfall from Antonica. +1395, -1, -392
Most Lore and Legend Quests can be started either with a book or by examining one of the quest items. Find the book, Know Your Giants (Version 2), using the location information above. Next, read the book, Know Your Giants (Version 2), flip through all the pages, and accept the quest. Once you have accepted the quest you may place the book in your house. You do not need the book to progress the quest.
Steps
Find the following auto-updating pieces by killing Giants in any zone:
a giant spirit
a giant eye
a giant heart
Find and examine the following tradeable pieces obtained by looting Giants in any zone, or buying them from other players
Note that the quest level shown in your journal will scale with your character level, up to level 50.
Grouped level 23 solo Firerock goliath can be found in Thundering Steppes at ( 200, 0, 600 ) Copy/waypoint 200, 0, 600 and ( 700, 3, 760 ) Copy/waypoint 700, 3, 760.
Fast respawn level 25^ - 27^ A Nightfall giant can be found in southeast Nektulos Forest around ( -578, 44, -185 ) Copy/waypoint -578, 44, -185.