This is meant to be a trench in Gallipoli.
Round MDF base with Foam board glued on. DAS clay covers the entire area and sifted sand glued to the DAS.
Tuffs of grass come from Minature range of diorama material - the small fence is evergreen strips and wooden match sticks, painted and weathered with Humbrol Weathering powders.
There is some sandbags made from Epoxy putty, but those are hidden behind the closed mound ... The picture on the right is from an early photo session, before I added in the sandbags ...