Though it has been a kingdom at various points of its existence, Corsor today is a region much like the lands around it. The land itself is generally flat, with a rising trend westwards toward The Chain. Where the land is uninhabited, it is open woodland with some plains and remnant forests. It is drier the west one goes, with most of the rain falling on the coast.
Corsor's claim to fame is the location of the New City, formerly known as Alderle. Apart from this curiosity, the only other town of any note is Port Thranoph on the Sea of Marnopyre coast, close by the border with Loios.