In Assassin's Creed Valhalla Wrath of the Druids, you can come across Cairns that will give you extra points. On this page of our guide you will learn where to find the cairns locations in Ulster.
You will find a cairn in the northern part of the region, on a small island.
It is not an easy task. You have to arrange the stones so that they stay upright, this is the only way to reach the designated height. Arrange the stones so that they rest on each other and do not fall. Pay attention to their edges - if their narrower ends are flattened, it will be easier to place them upright. And if they are wider - horizontally.
Arrange this cairn in such a way that the largest stone stands horizontally and the other two stand vertically. You don't need to use all four stones as this could increase the instability of the structure.
By completing this task, you will receive an extra skill point.
If you run into a situation where you can't even place two stones, simply reset the game. There's a good chance that something is bugged - you won't be able to finish that cairn.