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The Tunnel (also known as Underground Tunnel) is a location in Mario & Luigi: Bowser's Inside Story. It is located beneath Cavi Cape and located south-east of the Toad Town Caves. Bowser is catapulted here by a group of Bob-ombs shortly after Fawful abducts Princess Peach by using a laser-like machine to remove her from his body. Only two types of enemies appear here. This area seems to be an abandoned underground railroad. After navigating the tunnels, Bowser meets up with the Monty Bros. One of the four explains that they are trying to make a tunnel that will connect them to Toad Town. They use a huge machine to get the job done. A disgruntled Bowser relunctantly helps them achieve their goal. Mario and Luigi have to go to the Leg Outpost to give him power, though. Bowser has to achieve this before the battery dies in ninety seconds. Bowser's power overcomes the challenge and the machine is totaled. Bowser heads in the next room to the Toad Town Caves.
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