In the wake of terrible disaster, some dungeons survive as shattered ruins destined to become infested by all sorts of monsters! This line of gaming maps provides ready-to-use and captivatingly detailed fantasy set pieces for the busy Game Master. The next time your party follows up on a rumor about an ancient, partially collapsed dungeon when seeking strange treasures and stranger dangers, these maps have you covered with two different underground ruins! A special coating on each Flip-Mat allows you to use wet erase, dry erase, AND permanent markers with ease! Removing permanent ink is easy—simply trace over any permanent mark with a dry erase marker, wait 10 seconds, then wipe off both marks with a dry cloth or paper towel.