It should be known that both uplands are separated by a plain called "Little Polesia" (Ukrainian: Мале Полісся).
Average elevation is 220–250 m (720–820 ft) with the maximum being about 360 m (358 or 361 m according to various sources) in the Povcha Upland.
[1][2] Its surface is weakly wavy dissected by wide river valleys and gulches.
Geologically, it consists of Paleozoic deposits overlapped with rocks of Cretaceous system.
There are karst forms of relief and in karstic depressions there exist small lakes.