The view to the east –there's what I call a "villa" at the top –terraced, multi-roomed, and not nearly as well defended as the circular fort.
Also notice St Clair Peak at the right, with its own square fort, with two square rooms and enclosed rectangular walls, at least 1/4 as thick as the circular ruin's walls.
To the west not far away is Sears Kay, clearly in view as well.