Cairn puzzles are one of the many secrets you can find in Assassin's Creed Valhalla. They are mainly found on cliffs throughout England.
After you find the puzzle, go to the stones and interact with them. The object of the mini-game is to stack individual stones so that they form a stable pyramid.
Stone pyramid puzzle 1
- Location: Leicestershire, south of the monastery
Stone pyramid puzzle 2
- Location: on the coast of East Anglia
Stone pyramid puzzle 3
- Location: Vinland
the exit button does not work when the stones are collected