Mr. Lang, in his article on the' Cup and Ring,'* mentions how in Argyll a woman who desires to have a baby will slide down a cup-marked {i.e., an inscribed) rock, and adds that the sliding is attested by a chief of Clan Diarmid... J. H. RIVETT-CARNAC. Schloss Wildeck, Switzerland.
From Notes and Queries, April 27th, 1901.
*I believe this refers to the 1899 article in the 'Contemporary Review'.
Mid Argyll: a field survey of the historic and prehistoric monuments - by Marion Campbell and Mary L S Sandeman.
This article is cited frequently in the Canmore records for the area, and was printed in the Proceedings of the Society of Antiquaries of Scotland v 95 (1961/2).
Poltalloch Cist lies c. 0.75 miles NE of Poltalloch House ruin near Kilmartin, Argyle. The cist, measuring c. 3 feet by 2 feet, is covered by a capstone of the same dimensions. It is partially hidden by tussocks of rough grass. There are no visible traces of a cairn surrounding this cist.
According to Canmore ID 39478 (go to Links) there may have been up to 4 cists in the vicinity, however, by 1973 only one cist was found by OS.
On my visit in 2010 I also failed to locate any additional cist. However, the Poltalloch Cup and Ring Marked Panel nearby made this a satisfactory journey.