Advent, the Aethian City

Before you stretches a vast slab of stone and metal topped with a lattice of streets, strange featureless buildings and a surprising amount of greenery. It appears that the edges of the formerly flying city are reserved for grass, trees, ponds, and at the corners, fields of grains. Thousands of Volt Primordians shuffle from building to building, rarely uttering a word. They dress in plain robes, sometimes marked with signifiers of rank and esteem. As your eyes continue to scan the metropolis you notice that one corner seems to be damaged. Smoke pours from a crevice that appears to have been burned into the rock, disappearing into the fog above. Indeed, you can see a wall of fog in the distance every direction you glance, surrounding but not approaching the Aethian civilization.

Perhaps this is the source of the mists.