So, without further ado, here is the opening of the Atlas of Arunia:
Arunia, the World
The phrase Arunia Ecumenia (ah-ROON-yuh ec-yoo-MEN-iya) in Varan and all dialects of elvish means “the inhabited world.” Arunia Ecumenia is made up of many parts. The easiest and most prominent division is that made by the scholars of the north: Atva-Arunia, Arunia Oriens, and Sudus-Arunia, that is Northern Arunia, Eastern Arunia, and Southern Arunia. Of course, this simplistic division does little to capture the multitudes of cultures, kingdoms, and geographic regions of the land.
Atva-Arunia is made up of a number of continents: Aquilis, Avium, Substrictus and the semi-mythical Domum Nubium which we can translate easily as Cloudhame. Aquilis, Avium, and Substrictus are contiguous land masses and one can (somewhat) easily traverse between them. Cloudhame lies far to the north, in the Sea of Clouds, unreachable save by ships stocked with months of food and a crew capable of making a dangerous icy voyage.