This is going to be a beach (honestly!). I have designed it to fit on one end of my ever so useful "Zama" boards, so that I can use them for my BigRedBat-on-autumn-tour Thapsus game. I have built up the near side of the board to 10mm high with wood and balsa. I've also applied a couple of coats of filler over the "beach". The far side of the board will become the Mediterranean Sea, some 10mm below the level of the land boards.