The Sibillini Mountains, are a mountain group in Italy, part of the central Apennines. Situated between eastern Umbria and the Marche, they are mostly composed of limestone rocks, formed in the Mesozoic and Cenozoic (100 to 50 million years ago) on the bottom of an extinct sea. The land emerged 20 million years ago. Most of the peaks are over 2,000 m (6,600 ft); the highest altitude is reached by Monte Vettore at 2,476 m (8,123 ft).

Since 1993 the area has been part of the Parco Nazionale dei Monti Sibillini (Sibillini Mountains National Park).

From the Monte Vettore

From the Monte Vettore

Val di Panico

Pizzo Berro

Lame Rosse

Lake of Fiastra

Lake of Fiastra

Pizzo del Diavolo

From Pizzo Tre Vescovi

Monte Bove

Valley of Castelluccio di Norcia

Valley of Castelluccio di Norcia

From the Pizzo Berro

Pizzo Berro

Monte Vettore

From the Pizzo Tre Vescovi

Lame Rosse

Lame Rosse

Pian Grande of Castelluccio

Monte Vettore

Monte Vettore & Pilato Lake

From the Pizzo Berro

From the Monte Vettore

From the Monte Vettore

Valley of Castelluccio di Norcia

Valley of Castelluccio di Norcia

Valley of Castelluccio di Norcia