nigelswift wrote:
I reckon you're right, there probably is a correlation. There's a survey showing how many barrows have been lost in each county. I think Essex was worst, 95% ploughed out - is that intensively ploughed? (Never been that far East).
Ironically it's largely ploughing that has uncovered all the cist burials . BTW sometimes the tree barrow combination also has a modern revetment which helps keep livestock off .