My perforated stones in Smithills may be socketed for carved heads.

This circle has something to do with the loughs - http://www.themodernantiquarian.com/browse.php?site_id=3301 - as has the next one 'Haughton Common'.

Drystone walls were being painted with burnt ochre as recently as 1950 - in a primitive part of England.

I've found another piece of Rock Art - Northumbrian - it looks like the broken off top of a carved metre and a half tall and narrow pillar. I don't have time to post it yet - the cups are still clogged with sand and it's scarred as though the farmer has recently used it to chock a trailer or gate. Amongst the debris of a large Burl type b stone row. Still has some power ! Very beautiful...

They're sculpture.