A picture of Welkinstead
Here's Welkinstead. The floating cities are clustered along two subtropical high pressure belts where the subsiding air helps keep the poisonous gases from upwelling into the breathable layer where the cities can be found.
Here's Welkinstead. The floating cities are clustered along two subtropical high pressure belts where the subsiding air helps keep the poisonous gases from upwelling into the breathable layer where the cities can be found.