This ridge, consisting of low, rolling hills, runs for about 500 km in the direction from west-southwest to east-northeast, from the area of the Brest region, which is close to the border of Poland to the Russian town of Smolensk.
[1] The ridge is a limit of the last advance of the ice sheet,[2] which defines its geological constitution: mostly moraine loams with added glacial and alluvial sediments.
[2] The highest elevation of the ridge (and the whole Belarus) is Mount Dzyarzhynskaya, 365m.
The part of the Grodno upland [be] within Poland is called Wzgórza Sokólskie, of area about 1,300sq.km.
A small patch in the north belongs to Lithuania To the east it connects to the Smolensk–Moscow Upland, Russia via a narrow corridor called the Smolensk Gate [pl] between swampy areas of Dnieper and Dzwina river systems, of strategic military significance.