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"Underground Tunnel" redirects here. For information about stage 4-1 of Dance Dance Revolution: Mario Mix, see Frozen Pipes.
Bowser in the Tunnel
First appearance Mario & Luigi: Bowser's Inside Story (2009)
Latest appearance Mario & Luigi: Bowser's Inside Story + Bowser Jr.'s Journey (2018)
Greater location Mushroom Kingdom
Inhabitants Choombas, and Coalbits
Peach's CastleDimble WoodCavi CapePlack BeachBowser PathBowser CastleUnderground TunnelTower of YikkBlubble LakeToad Town CavesBumpsy PlainsToad Town
Click an area to open the relevant article.

The Tunnel (also known as the Underground Tunnel[citation needed]) is a location in Mario & Luigi: Bowser's Inside Story and its remake. 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 kidnaps Princess Peach. Only two types of enemies appear here.

The area appears to be an underground railroad under construction. 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 reluctantly 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, in order to avoid having to pay 50 coins for a replacement battery. Bowser's power overcomes the challenge and the machine is totaled. Bowser heads in the next room to the Toad Town Caves, where the Dark Star is sealed.



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 Artwork of the ring from Mario & Luigi: Bowser's Inside Story. In a brick in the big room beyond the middle or the rightmost crack in the east area.
Rock Shell Shell In a brick in the room beyond the leftmost crack in the east area.
Special Fangs Fangs In a brick in the southwesternmost scene of the west area.
Blitty Sprite of a Blitty used in the star menu From Choombas.

Names in other languages[edit]

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

Areas map[edit]

Level map


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