Upon Typhon’s Crown
Below we have described how to find the Ainigmata Ostraka in Assassin’s Creed Odyssey which is located in Melos, an island that is part of the Obsidian Islands. The Ainigmata Ostraka is called Upon Typhon’s Crown.
Location of Ainigmata Ostraka: Inside the Leader House, in the northern part of Malos.
Ainigmata Ostraka riddle solution: Go to Adrestia. Stand on the rock by lava. This is where you will find the helmet.