

At one of the intersections of Grand Line and Red Line are both Mariejois and
the Fishmen Island. I believe it is the only way to go to the "New World".
Since we don't know much about it, I was wondering what kind of secrets it
could hide.

What exactly is Red Line and what is on it?

[![enter image description
here](https://i.stack.imgur.com/l3njl.png)](https://i.stack.imgur.com/l3njl.png)


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one-piece
What is on Red Line?


The Red Line is basically a group of islands connected together.

We know that it has it's own season islands, as explained by Nami

> The Red Line that crosses the Grand Line has its own Summer, Winter, Spring
> and Fall "islands" [chapter 604](http://onepiece.wikia.com/wiki/Chapter_604)

It is 10,000 meters deep, bears the world capital
[Mariejois](http://onepiece.wikia.com/wiki/Mariejois), as stated by Hachi.

> The Red Line bears the world capital, Mariejois, and is said to be 10,000
> meters deep from ocean level to Fishman Island [chapter
> 496](http://onepiece.wikia.com/wiki/Chapter_496)

Due to the same height, it is also considered impassable, all though this has
been proven to not be the case as

  * [Fisher Tigre](http://onepiece.wikia.com/wiki/Fisher_Tiger) Managed to climb the redline to attack Mariejois as told by Boa Hancock in [chapter 521](http://onepiece.wikia.com/wiki/Chapter_521)
  * Germa66 passed it with an amphibious ship in [chapter 841](http://onepiece.wikia.com/wiki/Chapter_841)

Besides the sheer height, it is also considered indestructible, as
demonstrated by Laboon in [chapter
104](http://onepiece.wikia.com/wiki/Chapter_104), as he had been ramming the
red line to no avail for a considerable amount of time.


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