1140 m altitude separates it from the Rila mountain range. To the east Pirin borders the Razlog Valley, the valley of the river Mesta and the Momina Klisura Gorge that separate it from the Rhodope Mountains. To the south the Paril Saddle (1170 m) divides it from the Slavyanka mountain range. To the west Pirin reaches the valley of the river Struma, including the Kresna Gorge and the Sandanski–Petrich Valley, that serve as a divide from the Vlahina, Maleshevo and Ograzhden mountains further to the west. The main orographic ridge extends from the north-west to the south-east. Pirin spans an area of 2,585 km2 with an average height of 1,033 m. The maximum length between the Paril and Predel saddles is 80 km; the maximum width is 40 km. Reaching an altitude of 2,914 m Pirin is the second highest mountain range in Bulgaria after Rila (2,925 m) and the eighth highest in Europe after the Caucasus, the Alps, Sierra Nevada, the Pyrenees, Mount Etna, the aforementioned Rila, and Mount Olympus. Division Geologically and morphologically Pirin is divided into three parts: north, central and south, which differ sharply in size and altitude. North Pirin is the largest of the subdivisions and the mountain's downright part. It takes up 74% of the whole range's territory, being about 42 km long and ranging from Predel to the north to the Todorova Polyana Saddle (1,883 m) to the south. It is the most often visited part of the mountain, the only one to have an Alpine appearance, featuring many glacial lakes, resthouses and shelters. North Pirin is itself divided into two zones by the Kabata Saddle and the valleys of the Banderitsa and Vlahinska rivers. The northern zone consists of the steep marble Vihren ridge with the three highest summits in the range: Vihren (2914 m), Kutelo (2908 m) and Banski Suhodol (2884 m). The marble ridge is narrow and very steep, reaching a width of only 0.5 m at the ridge Koncheto (2810 m). The southern zone is more massive and consists primarily of granite ridges, including Pirin's fourth highest summit Polezhan, at 2851 m. The southern zone also has marble ridges, such as the Sinanitsa ridge with its homonymous summit (2516 m). In total the northern section of Pirin includes two summits with an altitude over 2900 m, seven over 2800 m, 13 over 2700 m and 60 over 2500 m.