The ridge is almost 60 km long, and the width does not exceed 15 km. In the north-west it starts in a saddle between hills Pískový vrch (547 m) in the Lusatian Mountains and Ostrý vrch (514 m) already in the Ještěd-Kozákov Ridge. The elevation of the hills gradually increases above 800 meters and culminates with Ještěd (1012 m). Ještěd is the highest peak of the ridge and the only peak above 1000 m as well. The ridge continues to the south-east. It is intersected by the deep valleys of Mohelka and Jizera. The last hill above 700 m is Kozákov (744 m).