Ciao!
During my last raid in the DIY store, I found an incredible stuff to model cobblestone roads.
It is an insulation sheet, to be put between the heather and the wall.
And, as you can see from the pictures, it models incredibly well a cobblestone road.
In the pictures there is the before (silver)/after (painted) version.
I did a quick test, applying a medium grey first coat, and then weathering and ageing it.
I have to try again, next time with a black coat.
Hope this helps.
Marco

