NS4278 : Mounds beside the Spouts Burn
taken 15 years ago, 3 km from Bonhill, West Dunbartonshire, Scotland

The largest such mound is in the background; it contains an irregular depression that may be a badly-decayed lime-kiln ruin. This is discussed in NS4278 : Possible lime-kiln ruin at the Spouts Burn.
Visible in front of it are two much smaller mounds. These are low, but are 4 to 5 metres across. There are several pairs of these small mounds here; each mound faces a corresponding one on the other side of the burn.
I had been at this site before, but the lighting was poor on that occasion. After my second visit, on which the present photograph was taken, I submitted a report to WoSAS for this hitherto unrecorded site. The helpful contact there made the suggestion that the small mounds may be the remains of clamp kilns; that would seem to fit the circumstances of this site very well (for a more detailed description of the site, see NS4278 : Signs of former industry at the Spouts Burn).
Unlike the usual variety of lime-kiln to be found in this area (as ruins – see NS4278 : Lime-kiln ruin in upper Auchenreoch Glen for a nearby example), clamp kilns were temporary structures. The green grassy nature of the mounds suggests that they are richer in lime than the surrounding moorland.
Alongside this part of the Spouts Burn, there is a single large green mound, with a hollow that is probably a lime-kiln ruin, and several similar but much smaller mounds; the latter are arranged in pairs, with one on each side of the burn, and they may be the remains of clamp-kilns. See Link
for an annotated satellite view centred on this area. If associated with nearby cornstone quarrying (see Link for details), these signs of former industry probably date from the eighteenth century.
A very extensive network of ancient tracks on the moors in West Dunbartonshire links old quarries, ruined lime-kilns, and other sites connected with the local limestone-burning industry, which flourished in the 18th century. See Link for a Geograph article about the network, and Link
for an annotated satellite view of it.
