The area outside the dragon lines are Wyld zones. During the First Age the Solars expanded Creation into these areas. They used jade obelisks to extend the reality making energies of the Elemental Poles, even creating new networks of dragon lines to stabilise the new land. The Primordials, although greater beings were never so concerned with Creation, they created it as a shield against the Wyld and never lived in it for a long time.
   Exalted is a very explicit game where it fits that things are explained. Warhammer is far more implicit where things are hinted at and mentioned but rarely explained. And yet there's so much they don't explain like what dragon lines are.

   Dragon lines mark the border of an Elemental Pole's zone of influence. The Earth Circle runs through all four of the other Elemental Poles. The Principle Dragon Lines of each other Elemental Pole runs through the Pole of Earth. They also create overlapping zones between eachother and with the Pole of Earth at the centre. Each Pole has an Inner Sanctum outside the areas overlapped by other Elemental Poles. In this areas the energy of the Pole is predominant. The overlapping fields of Essence form an impenetrable barrier against the Fair Folk.

    Water, air, fire and wood, earth and air occur where their Elemental energies are present. These energies attract Elementals (is it like that or the other way round?) Water and wood are complimenting partners rather than opposing forces like fire and ice. The Poles of Earth and Air exist an infinite distance beyond Creation. How far are all the Elemental Poles from Creation? Dragon Lines from all the Elemental Poles meet in the centre of Creation at mount Meru making it a nexus of geomantic energy and the most powerful manse in all Creation. Dragon Lines, lines of elemental energy form the very structure of Creation itself so moving them is highly dangerous if not done with a proper understanding of geomancy. Each Elemental Pole is the source of Essence of one Element in Creation and the origin of it's Dragon Lines. Celestial Essence isn't so straightforward.