Bottomless Lake is an Ainigmata Ostraka in Assassin's Creed: Odyssey (ACOD).


Taking a plunge? Eveyone on the island thinks this is the deepest dive, but there is a lake in the Coast of Koliadai that is rumored to be bottomless. If you are able to dive as far as the woman in marble, you will be able to climb me.




  • The mystery is found at the bottom of Melissani Cave.
  • Find this cave to the North of Sami.
  • Dive into the pool at the bottom of the cave.
  • Nearby the center you will find the


  • Find Lake Abythos close to the middle of Coast of Koliadai.
  • Swim out to the middle of the lake here.
  • Dive down and search along the Western shore.
  • You will find a statue sitting on a shelf underwater.
  • Go and collect the item here to complete the mystery.


  • Engraving: +10% Critical damage while at Full Health.

Video Walkthrough[edit]

[ Bottomless Lake Video Walkthrough]

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