Take the track to the W signposted to the cemetery off the B842 about 2.5 miles N of the Carradale junction. This is easily driveable until the signpost to the L for the "Toothie Stane" after which it becomes a little rougher. You may wish to park at the sign.
The site is a Clyde chambered cairn excavated in the early 50s. The main stones of the chamber and the two portal stones are visible. The N portal is nearly 3m high and is known as Carragh an Talaidh (Pillar of the Soothing) or the Toothie Stane- see Folklore.
Just to add to greywether's folklore - not that I'm encouraging vandalism but it won't work just any hour of the day.
Into it [the Toothie Stane, the large outer portal stone] have been driven at least two dozen nails or screws. Local legend explains these by saying that it used to be the custom for anyone suffering from toothache to seek a cure by driving a nail into the stone at midnight!
I am indebted to Mr S. R. Skilling [for an account] of a rather similar superstition from SW. England, to the effect that an aching tooth could be cured by hammering a nail into the trunk of an oak tree.
The excavation of the chambered cairn at Brackley, Kintyre, Argyle. JG Scott, in PSAS 89 (1955/6).
The large portal stone is known as the Toothie Stane as hammering a nail ito it was supposed to cure toothache. At leat two dozen nails and screws were visible in 1972 but these have now rusted away leaving some pockmarks on the stone.