From Pikmin Fanon
This article relates to the official games. See Pikipedia's "tunnel" article for more official information.
Tunnel The icon used to represent this obstacle.
P3 Tunnel.png
Appearance in Pikmin 3.

A tunnel is an obstacle that serves as a shortcut between two parts of an area but must be cleared of clutter before it can be used. Pikmin that are ordered to do so will gradually remove the obstructions present in a tunnel until none are left.

In fanon games

This is where users type their version of tunnels.

None yet!