From James Boswell’s ‘The Life of Samuel Johnson’ (1832), p357, and refering to their visit in the 1770s?:
We set out at about nine. Dr. Johnson was curious to see one of those structures, which northern antiquarians call a Druid’s temple. I had a recollection of one at Strichen, which I had seen fifteen years ago; so we went four miles out of our road, after passing Old Deer, and went thither. Mr. Fraser, the proprietor, was at home, and showed it to us. But I had augmented it in my mind; for all that remains is two stones set up on end, with a long one laid upon them, as was usual, and one stone at a little distance from them. That stone was the capital one of the circle which surrounded what now remains.