| This level is a major plot point!
This level is a major level in the game. After you finish the level, you may be able to access other characters, minigames, and tunnels. Most of them also include a cutscene.
This level introduces sideways conveyors.
This is a tutorial to sideways conveyors. Simply jump right three times at the ring of conveyors, then when you get to the big conveyor at the end, keep jumping left to counteract the right-moving conveyor. (but be careful and don't overshoot and fall off the platform).
Since this is a tutorial level, this is not too hard. You should be able to make quick work out of this level.
New Tunnel Edit
There is a glitch where it refers to this tunnel as The Way Onwards. Refreshing the page helps, and the bug doesn't affect gameplay.