Just as it appeared, it disappeared.
Today, in 10/5/2022, the Underathians supervisors were late to work on the construction of the port.
Not being able to reach them otherwise, workers were sent to the nearby town, only to find out it wasn't there.
Satelite images confirmed that none of the cities of Underath were there. As suddenly as it appeared, it dissapeard. The rulers and people of other nations will always remember this encounter, the strange people of Underath who somehow haven't been discovered until then. How was that even possible? Though disapearing like that proves that this kingdom was truly something else, and all europeans hope that the Underathians are good, wherever they are, wherever they went.