There are no breadcrumb quests leading up to this quest.
The monsters that are needed for this quest can be found due south of Erathis Menel in the burning city of Vestige. It is strongly recommended that you bring a group to try and tackle this quest or Close the Door Behind You. The monsters in Vestige are elite and will give most classes more trouble than they are worth. After completing the objectives return to Erathis for your reward.