"But it is also possible that it may be a fortification; or it may be a place of Christian worship, as the first Christians often chose remote and wild places, to make an impression on the mind; or, if it was a heathen temple, it may have been built near a river, for the purpose of lustration; and there is such a multitude of divinities, to whom it may have been dedicated, that the chance of its being a temple of Anaitis is hardly any thing."
— Boswell, James (1740-1795)
See The Journal of a Tour to the Hebrides, with Samuel Johnson, LL.D. By James Boswell, Esq. Containing Some Poetical Pieces by Dr. Johnson, relative to the Tour, and never before published; A Series of his Conversation, Literary Anecdotes, and Opinions of Men and Books: With an Authentick Account of The Distresses and Escape of the Grandson of King James II. in the Year 1746. (London: Printed by Henry Baldwin, 1785). <Link to ECCO>
Text from Johnson, Samuel and James Boswell. A Journey to the Western Islands of Scotland and The Journal of a Tour to the Hebrides, ed. Peter Levi. (New York: Penguin Books, 1984).