Publisher Blurb: Gale Force Nine’s Official DUNGEONS & DRAGONS Game Mat Red Hall of Vor Rukoth are ideal battle grids for staging encounters during your adventures! The vinyl mats may be marked with WET-ERASE markers to temporarily alter terrain areas or make other notes about battlefield conditions during play. The Game Mats measure 20” x 30” and are marked with a 1” grid. Both of these Game Mats are based on artwork provided by Wizards of the Coast.