Cave of the Portal

Slab

As you decided to take the boat out of Mosville and traverse the lake you can see faintly a small like island appear out of nowhere as the fog settles strangely, when you look around it seems as the fog protects it… you reach a cave and go inside only to see an ancient portal, some graves and a pertified person just before the portal, you begin to read the text laid before you and can only very roughly translate a certain phrase; ”old father, creator, Atlantis”

This map was made by yours truly and yes as you might have guessed what this is, they were there.
-Promesheus