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Cairado is a city in Thu-Athamar, where the Athamara River joins the Istandaärtha River. It is below the proposed location of the Wisdom Bridge.  Cairado is named for a female spirit; the Istandaärtha is named for a male spirit.  (There are rude rhymes about this.)

Ezho is a city at the confluence of the Istandaärtha and Evresartha rivers that sends barges to Cairado.

The airship Radiance of Cairado is named after the city and the spirit.