Looking back at the map I would have assumed it was a region, maybe a country.
I think I sort of see the problem, or a problem. The text seems like it's just there... not really tied to any particular land or feature or anything.
Some people will do things like - land of Erethos, realm of Estra, kingdom of Thyandul, Alterom region, etc.
The descriptive word helps say what that text means.

With the Ulthui map the text kind of floats there without being obvious what it's referring to.