Rowen village stands on an old drovers' route which once took cattle from Anglesey all the way to the cattle markets in England.
The trail enters forestry at Raheenakit before joining an old drovers' road, once used to herd sheep to market in Shillelagh.
We were on one of the old drovers' paths that weave from village to village throughout the Sierra de Gredos.
Before the age of steam, the cairn and its sister cairns lay on the old drovers' road north.
I think it used to be an old drover's track, but it's not used anymore, and only the bit by the road is clear.
The path itself follows old drovers' roads, minor paved roads and farm tracks and can be walked in 4 or 5 days.
This old drovers' road was constructed on high ground to make passable this only available medieval route from coastal points south from Stonehaven to Aberdeen.
The writer and naturalist George Borrow encountered an old drover in the area around Tregaron in 1854.
Macfarlane journeys along the old drovers' tracks and sea paths of Britain.
Arkley Lane, off Barnet Road, is an old drovers' road.