Ri Cruin is a much-altered cairn site in Kilmartin Glen, the most southerly of the linear cemetery. Little of its original form remains, it having been reused as a lime kiln in the past. This view shows the massive horizontal slab over the central cist, which is shown below:
This photo, taken from the south-west, shows the central cist to the left, and to the right can be seen the slab covering the south-eastern cist, the second of three found during 19th century excavations of the site:
This second cist is seen in more detail here:
The end slab (rightmost in the photo) of this cist is interesting in that it has seven pecked axeheads marked on it. This is thought to relate to copper or bronze working, or control of the copper or bronze trade routes, in the area.
Again, more information can be found on the Royal Commission on Ancient and Historic Monuments in Scotland’s Canmore website here. The Canmore ID is 39456.
Finally, a view of the cairn from the west: