I kinda did a mix of everything.........
the balast was applied in/on/around the craters, sealed with PVA and then washed it with chestnut ink.
added blood stains/splashes (needs blending in a bit though)
had an oil spill with blue/chestnut/green ink but it disappeared!:eek
razor wire will be added later (when GW avtually gets some in

)
and remember i've got another trench board to do after this, so I might add something else to that..............bunker mounted volcano cannon?........