Machrie Moor III originally consisted of nine stones, but only one now remains standing. The remaining upright climbs to 4.3m. Stumps of the remaining stones are still visible, and together, they form an egg shape.

The remaining stone stands out dramatically against the moor, with the mountains of Arran in the background, making it the second most distinctive and visually impressive site in the cluster. Viewed with the three stones of Machrie Moor III in the background, it makes quite a stunning spectacle.