You can encounter cursed locations in Assassin's Creed Valhalla. You must free them from their ill fate. On this page of the guide you will learn where to find such locations and where can you find the totem that is corrupting the area. This will make it easier for you to max out the Grantebridgescire region.
Cursed Symbol 1
The location of the cursed place: north of Earnningstone.
Location of the totem: it is very simple to find. You can destroy this totem straight from your horse. Look at the branch that hangs right next to the highest pile of stones. You should immediately find the location of the totem and shoot it to get rid of the curse.
Cursed Symbol 2
The location of the cursed place: east of Middeltun.
Location of the totem: to get to the totem, you have to break down the wooden door and then shoot towards the totem. This way, you will quickly get rid of the curse.