Erathia is a kingdom of mysteries and secrets.

Yes, it looks nice.
But there are several inaccuracies here.
From Harmondale, you can only reach Erathia, Tularean Forest, and Barrow Downs on your own.
And according to the map, you can also reach the Land of the Giants. But in reality, the portal to this location is in Nighon.
And the island of Evenmorn is not in the correct location.
So, it's best not to take it as gospel. :)