[QUOTE 2691626, member: 9609"]Two interesting photos - what are all the cairns for? and what is the idea of the two dividing lines in the wall at third and two thirds height?[/quote]Cheers
The cairns are called 'currocks' (celtic for cairn) in these parts and litter the North Pennnine moors. Historically they were used as waymarks/locators for those working/travelling in the uplands, and there are even a few you can shelter inside. Those in the photos are just a local curio, sited atop Talkin Fell, nr Brampton. It seems to be a local tradition to 'go build a currock' on the fell top as each time I go up it's a different scene... some more, some less, some fallen down, some repaired, some are quality work and some less so.
The wall style again is very typical to east Cumbria/North Pennines. The two prominent dividing lines are courses od through ('thruff') stones which simply tie the two sides of the wall together making it stronger. I've never found out exactly why they stick out, but have been told by locals (including wallers) that it let you clambering over the wall at any point quite easy and if the wall does fall into disrepair it will tend to collapse only as far as a thruff stone layer, so makes rebuilding that section much easier and quicker.