The various finished components fit together very flexibly as can be seen in the above image.
I was in the process of planning to make such terrain pieces and had done a few some years back, but it is a slow fiddly processing in this scale. This product from 4Ground is just fantastic. Came away from the sprue with ease and went together perfectly. I probably did go overboard with bassing (mainly filing down the edges - super easy with a sharp knife, then a bit of texture paint, more paint and then flock). They have come up a treat!
These are the four components.
Perhaps the finished wood is too dark, but then I am used to Australian conditions, where wooden fences would quickly go to a light grey with the sun's bleaching. Wet wood would be dark and if it has been treated with anything like creosote it would also go dark. I did consider going over with a light grey/brown dry brush to lighten them, but I felt I'd put enough effort into them already.
And I saw they also do snake rail fencing! I've ordered two packets. A must for my ACW army.