The main thing that struck me about this place was how different all the stones are. Red ones, smooth ones, grey ones, crinkly ones, quartzy ones, allsorts. A couple of them looked to have possible cups, but on closer inspection, these proved to be totally natural.
Halfway up a hill seems an odd spot for such a thing, but there must have been a reason, makes it easier to get to for one thing. If you’re passing from Machrie to head to Ardrossan or Brodick (or vice versa), it’s worth stopping and making the short hop up from the road.