Ok.. here's the dirt work and trench. I used Hydrozell-Color for the soil..man I love that stuff! No shrinkage, no chunks, nice and fine. The rock is crunched up chalk rock from the yard. Wait a few days for it all to dry and onto painting and weathering...and then finish the tank...
Roughly, what color is the soil in northern France ?
See ya when it's finished.
Steve