Rodna Massif, mountain massif, the highest part of the Eastern Carpathians in Romania, reaching a height of 7,556 ft (2,303 m) at Pietrosu in the northern part of the country. Active glaciers are no longer present, but extensive glaciation of the crystalline rocks has produced fretted peaks and lakes, particularly on the northern slopes, which contain a number of alpine lakes, the largest being Lake Lala.