From the Super Mario Wiki, the Mario encyclopedia
M&LBIS Tunnel.png
Greater location Mushroom Kingdom
Inhabitants Choombas, and Coalbits
First appearance Mario & Luigi: Bowser's Inside Story (2009)
Latest appearance Mario & Luigi: Bowser's Inside Story + Bowser Jr.'s Journey (2018)
Princess Peach's CastleDimble WoodCavi CapePlack BeachBowser PathBowser CastleUnderground TunnelTower of YikkBumpsy PlainsToad Town CavesToad TownBlubble Lake
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The Tunnel (also known as the 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.



In-field items found in this area include:[1]

Item Icon Location
Supersyrup Jar Syrup BiS.png In a brick in the southern scene of the west area.
Cheap Ring MLRPG3 C Ring.png In a brick in the big room beyond the middle or the rightmost crack in the east area.
Rock Shell MLRPG3 C Koura.png In a brick in the room beyond the leftmost crack in the east area.
Special Fangs MLRPG3 C Fang.png In a brick in the southwesternmost scene of the west area.
Blitty BlittyMLBiS alt.png From Choombas.

Names in other languages[edit]

Language Name Meaning
Japanese 地下トンネル
Chika Tonneru
Underground Tunnel
Spanish Túnel Subterráneo Underground Tunnel
French Tunnel Souterrain Underground Tunnel
German Tunnel -
Italian Tunnel sotterraneo Underground tunnel


  1. ^ abcd9146 (December 30, 2009). Mario & Luigi: Bowser's Inside Story FAQ/Walkthrough. GameFAQs. Retrieved June 10, 2016.