Assassin's Creed Odyssey Orichalcum Fragment Locations Map
When you kill the leader of Elis in the Valley of Olympia : r/AssassinsCreedOdyssey
Elis - Assassin's Creed Odyssey Guide - IGN
Access The Animus on X: "As some of our fans and community members asked about it, apparently the recent Patch 1.0.6 for #AssassinsCreed Odyssey doesn't show a prompt for the new quest