An axial stone circle is a particular type of megalithic ring of stones of which many are found in southwest Ireland. Archaeologists have found it convenient to consider axial five-stone circles and axial multiple-stone circles separately – this list is of multiple-stone circles, those with seven stones or more. They have an approximate axis of symmetry aligned in a generally northeast–southwest direction – the stone at the southwest side of the circle, rather than being an upright orthostat like all the rest, rests on the ground with its long axis horizontal. Because it marks the axis it is called the axial stone. It is usually quite thin and it lies with its long thin edge along the circumference of the ring.