The board is on five 2'x4' panels of 1/8" MDF that butt together in a specific order. I did not make these maps geomorphic. The first, done around 2007, is a chunk of imaginary territory crossed by large rivers. Intended to simulate the WWII Arnhem Campaign (aka "A Bridge Too Far"), each of the three massive rivers was painted as marshland (to keep GEVs at bay) and only have a single bridge each. Here is the original mock-up, when the map was only four panels.
After playing on this a time or two, I added the fifth panel:
A couple years later, inspired by other's talk of real world battlegrounds, I flipped the five boards over, fiddled around a bit with topographic maps, and produced the Delta Board.
This picture shows it in use at KublaCon 2012, but only shows the four eastern boards.
