From the publisher's website: Illustrated wilderness terrain tiles for use with the Dungeons & Dragons Fantasy Roleplaying Game The Dungeon Tiles Master Sets are designed to give Dungeon Masters the tiles they need to build Dungeons & Dragons adventure maps, including maps appearing in published adventures. With this box of customizable terrain tiles, Dungeon Masters can add new dimension to their Dungeons & Dragons tabletop experience. Easy to set up and infinitely expandable, this Dungeon Tiles set allows DMs to create the adventures they want to play. This box contains 10 double-sided sheets of illustrated, die-cut terrain tiles printed on heavy cardstock. The tiles feature wilderness sites and terrain elements that Dungeon Masters can use to build exciting encounters set in the outdoors.