Elbow Greece

Elbow Greece was a virtual representation of one of Kassandra's genetic memories, relived by Layla Hassan through the portable Animus HR-8.5.

Riddle
''Ready for a long hike? At the top of this mountain, you can see the entirety of Greece! Follow the road west to the Statue of Prometheus, then your long journey north begins. Find me at the peak in Oropos Heights.''

Outcome
Kassandra found and recovered the treasure.

Reference

 * Assassin's Creed: Odyssey