Drop locations

i just realised i posted this in the wrong page, since there's 2 pages about this same event. anyways, what i said was based on the current event, which conflicted with the description: Within the Shadow World, Fomor minions are dropping strange fragments that when puzzled together form a treasure chest. it didn't say anything about erinn dungeons, yet they still drop in them, but i feel like they drop more frequently in the boss rooms. Edit: Turns out both event pages lead to the same discussion page, which may lead to the confusion