In Assassin's Creed Valhalla, you can find cairns that will give you extra points. On this page of our guide you will find out where you can find cairns in Glowecestrescire area.
You will find the cairn in the western part of the map.
This is quite a simple task. Arrange all the stones horizontally, and only the smallest one vertically, you should easily solve this cairn. The screenshot above shows an exemplary solution.
This will give you an extra skill point.
If you find yourself in a situation where you can't put even two stones on each other, just reset the game. There is a good chance that something has bugged and you will not be able to build the cairn. Try to reset the game to resume the task.