Der Tunnel is another small Carcassonne expansion published in an issue of Spielbox magazine. This one is included with Spielbox 6/2009. Like its predecessor, Carcassonne - Die Katharer, it comprises merely four tiles; however, Der Tunnel also includes two tokens for each player. To summarize the incredibly short rules, in addition to your normal tile and optional follower placement, you may place one of your tunnel chips on any exposed tunnel entrance on the table, regardless of whether it's on the tile you just played. Once both your tunnel chips are out there, they connect the two roads, wherever they might be. For bonus fun, you can even do this to tunnels portrayed on tiles in other expansions.