The invention relates to a cover (1), preferably for Spargeldämme (2), in particular provided for a tunnel system (3), with a first film (4) whose underside (6) facing the bottom (7) in use, and one second film (5), whose underside (8) in the use state of the upper side (9) of the first film (4) faces, wherein the first film (4) and the second film are interconnected. According to the invention, the underside (6) of the first film (4) in the overlapping region of the two films (4, 5) has a larger area than the underside (8) of the second film (5).
