Lacra C has been mistakenly thought to be the remains of a large ring. Burl asserts however that it is a stone row. Well no one's arguing with that. Three stones, in a row, not much to add really.
To find the last circle we need to retrace our steps northeastwards. This is the view NE from Lacra B. The fourth circle and associated rows lie beneath Great Knott bulging on the horizon.