The Twelve Apostles is a stone circle measuring approximately 90 metres in diameter, making it the largest stone circle on the Scottish mainland, and the fifth largest stone circle in Britain. It consists of eleven stones, five of which remain standing. The tallest upright is roughly 2 metres tall, but the largest recumbent stone measures about 3.2 metres.
Although visitors frequently report being underwhelmed by The Twelve Apostles, this wasn't my experience at all. Despite being fairly ruinous, it's still easy to make out the shape of the circle, and even the fallen stones have enough character to be of interest. While this may not be the most visually impressive site, it's still well worth exploring.