The Spačva basin and Bosut Forest form the northern section of forest and swampland complex spreading south of the Sava River as well, where it is known as Donje Podrinje in Bosnia and Herzegovina and Central Serbia.
The Spačva basin and Bosut Forest make up the northern part of a forested and marshy area that stretches south from the Sava River, where it's called Donje Podrinje in Bosnia and Herzegovina and Central Serbia.