The Apennine Mountains: Italy's Spine from North to South

The mountain range running the length of the Italian peninsula—from the Ligurian Alps (near French border) to the Aspromonte (Calabria's toe)—is the Apennine Mountains (Appennini).

• Length: ~1,200 km (750 mi)
• Highest peak: Corno Grande (2,912 m / 9,554 ft) in the Gran Sasso massif (Abruzzo).
• Geology: Young fold mountains (Alpine orogeny), still active (earthquakes, volcanoes like Vesuvius, Etna nearby).
• Ecology: Forests (beech, fir), wolves, bears, chamois; national parks (Gran Sasso, Majella, Abruzzo).
• Cultural role: Historic barrier, refuge, watershed (Tiber, Arno, Volturno rise here).

The Apennines define Italy's shape, climate zones, and regional identities.