From the back of the box: Dungeon Floor Plans 4 are an extension of the Dungeon Floor Plans role-playing game aid for use with 25mm miniature figures, and provide flooring, walls, features and accessories for adventures set in Caverns & Mines. Contents 12 coloured [sic] sheets of card as follows: Five sheets representing rocky Cavern Flooring Three sheets representing Tunnel and Cavern Walls Two sheets of Junction, Openings, and Corners One sheet representing natural Cavern Features One sheet of Mine Rails, Junctions and accessories