Exterior Plane

The Exterior Plane - which is often known by a variety of names including "The Plane", "Ext", "X Plane" or simply "X" - is an unusual plane of existence that lurks between universes. It has no specific weight, height or mass and yet it appears to have a very physical presence that is being explored continuously. The landscape is entirely alien to itself - that means everything found on Ext is from another world, including the flora, fauna and the very soil. Portals, of various sizes, are common on Ext and through those portals come all manner of lifeforms that may come to inhabit the land. Its first known settlers were the Pioneers who built some of the plane's greatest known cities.

Etymology
The name of Ext was first created as a codename by the scientists of Adana. They initially considered the world 'plane', as in the geometrical term, apt due to the inability to obtain information regarding the mass and the seemingly endless nature of the location. However the esoterical theory of 'plane' also seemed to fit the term and so 'plane' was commonly used to refer to the location. "Exterior" was used to define which plane people were referring to and exterior, specifically, meant 'beyond the universe'. An exterior location ; an exterior plane. Though the name was never meant to be permenant, the ability to simply call the location 'The Plane' or even just 'X' quickly became very appealing by all and the term stuck, even through attempts to alter it.

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