Welcome to Clava Cairns. Clava Cairns is estimated to date back over 4,000 years and is set within a beautiful spot within a small wood. The three well-preserved cairns at Balnuaran each have a central chamber. But while the two outer cairns have entrance passages, the chamber of the central one is enclosed. Each cairn is surrounded by a ring of standing stones. Many of the stones used to construct the cairns have cup marks on them, the purpose of which remain a mystery– these may have been reus