Monte Soratte is a mountain ridge in the Metropolitan City of Rome, central Italy. It is a narrow, isolated limestone ridge with a length of 5.5 km (3.4 mi) and six peaks. Located some 10 km (6.2 mi) south east of Civita Castellana and c. 45 km (28 mi) north of Rome, it is the sole notable ridge in the Tiber Valley, geologically represents the Meso-cenozoic Tiber ridge. The nearest settlement is the village of Sant'Oreste. Saint Orestes or Edistus, after whom the settlement is named, is said to have been martyred near Monte Soratte.