This 60cm by 60cm piece of ground was originally intended to be a board for my DBA project. After a year of not using it I drew the gridlines on for D&D and viola! An instant piece of ground that works perfectly for D&D and looks a hell of a lot better than a vinyl mat! Throw some trees on there and you almost have a miniature game!

This 60cm by 60cm piece was designed to play the roll of anything that might have a stone floor. The most obvious implementation would be a dungeon, but also a castle floor or a city floor would work as well.