How many islands are there?

[Metathron]

Hey y'all,

I managed to finish the game without uncovering two of the islands, one is above Portland on the world map, the other below Aralan. Granted, I did not finish all the quests, but the vast majority and there were no armies left to be guarding the maps or otherwise.

So, what's the deal? Are those even meant to be discovered? What am I missing?

Just for the record, my world map shows: Whitehill, Portland, Aralan, Galenirim, Tristrem, Bear Butte, Sandy Island, Monteville, Inselburg, Darenbam.