This region has a completely dense forest, Amazon style.
I also never liked this type of effect, and I prefer placing trees manually, but mapping such a dense area one by one would be crazy even for me.
In theory, in the top right corner there is a box with information.
4 Serenia - Agroal and east coast
4 Serenia East Coast
2 - Marsumilambi - Vergha. First capital and abandoned town
3 - Skeleton Coast - Fishermans Isles
Kinda "SpellJammer port"