original: the mountain range forms the border between both countries for 150 kilometers , extending from the western border of saxony to the elbe river .
simplifications: the mountain range forms the border between both countries for 150 kilometers , running from the western border of saxony to the elbe river . the mountain range extends between both countries for 150 kilometers from the western border of saxony to the elbe river . the mountian range makes up the border between both countries for 150 kilometers , beginning from the western border of saxony to the elbe river . the mountain range constitutes the border between both countries for 150 kilometers , stretching from the westerly border of saxony to the elbe river . the part of the mountain range that starts at the western border of saxony and ends at the elbe river is the border between the two countries for 150 kilometers . the mountain range extending for about 150 kilometers from the wester border of saxony to the elbe river forms the border between both the countries . the mountain range forms the border between both countries for 150 kilometers , reaching from the western border of saxony to the elbe river . the mountaiun range extends from the western border of saxony to the elbe river , forming the border for both countries for 150 kilometers .