Panoramic view of the Vulsini volcanotectonic depression, filled with marvellous Lago di Bolsena. View is from Montefiascone to the NW, on 5 March 1994. Two small islands, Martana (left) and Bisentina (right) lie in the southern central area of the lake, formed by post-caldera lacustrine eruptions. Historic records indicate that eruptive activity of Vulsini volcano occurred as recently as 104 BC, but geologic evidence exists only for eruptions until about 150 ka ago.
Monte Cimino, a Pleistocene lava dome complex near the town of Viterbo (north of Roma), seen from the village of Vitorchiano, 4 March 1994. This volcanic complex produced a voluminous ignimbrite sheet locally known as "Peperino", a very hard material well suitable for building.
The caldera of the Vico volcano, south of Viterbo (Lazio) and adjacent to Monte Cimino (above). Part of the picturesque caldera lake and the intracaldera cone of Monte Venere carrying a light dusting of snow are visible in this winter image, taken on 2 January 1995. The caldera collapsed some 150 ka ago, and the last activity of Monte Venere took place some 95 ka ago.
View of the northern part of Lago di Bracciano, the largest structure of the Sabatini complex. The lake fills a volcanotectonic depression formed about 3.7 Ma ago. Monte Rocca Romana, a postcaldera stratocone is visible on the right (northern) side of the depression. Taken from the rim of the Sacrofano basin, in late April 1996.
The Colli Albani (Alban Hills) are seen here from the southern outskirts of Roma, March 1992. Monte Cavo forms what appears to be a central cone (which, in fact, is only a high crater rim). Since the photo was taken, tens of private television antenna have been deployed on the summit (there were less than 10 in March 1992). Colli Albani most recently erupted about 22,000 years ago, forming the craters now filled by the beautiful lakes of Albano and Nemi. The area is still seismically active, as demonstrated again on 12-13 June 1995 when Roma was jolted by a series of earthquakes (up to magnitude 3.9 Richter).
Lying somewhat far away from classical tourist areas, Roccamonfina, south of the town of Cassino, is being visited much less than the historically active volcanoes around Napoli. It is, however, being vigorously studied geologically. This view, taken in March 1993, shows the volcano from the W (near Sessa Aurunca). The caldera wall with its highest point on the left side is well distinguishable, the post-caldera lava dome of Monte Santacroce looming above it. Roccamonfina has been the site of several large-volume, ignimbrite-forning eruptions.
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