"Alduin's Keep" is a ruined keep located near Grayson's house and close to the town of Uldun. The small town is known to be ruined by Armenbrine and it is still uncertain whether the people in that town left or died.
No history has been briefly mentioned about the location,"Alduin's Keep", besides Armenbrine attacking the village.
The following is a list of all the times Alduin's Keep was mentioned or seen in the Haunted.
In Alduin's Keep, Drake and Grayson reunited once again after 4 long years. It was also where Drake discovered Grayson's secret about being wanted by the Empire. However, he didn't realize what for until later on in the first episode. The next day, Drake and Grayson passed through Alduin's Keep when they were running from a Nightmare, and heading towards the Red Keep.