Lessinia, also known as the Lessini Mountains, is a mountainous plateau in the Venetian Prealps of northern Italy, located mainly in the Province of Verona and partly in the Province of Vicenza and the Autonomous Province of Trento. Part of the area is protected within the Lessinia Regional Nature Park. It is bordered to the north by the Ronchi Valley and the Carega Group, to the east by the Leogra Valley, to the south by the course of the Adige River and the upper Veronese plain, and to the west by the Lagarina Valley. Its main elevations generally range between 1,500 and 1,800 m above sea level.
The area is characterised by open high pastures, malghe, wooded valleys, karst landforms, fossil deposits, caves, Cimbrian cultural heritage and vernacular architecture based on local stone slabs. Its landscape was shaped by the long interaction between geology, pastoralism, forestry, stone quarrying, seasonal alpine grazing and rural settlement.
Evidence of human presence in Lessinia dates back to prehistoric times. The availability of flint, caves and rock shelters favoured early settlement, while the spread of castellieri, small fortified hilltop settlements, is attested from the beginning of the 2nd millennium BC. Before the arrival of the Romans, between the 3rd and 2nd centuries BC, the area was inhabited by various peoples of Rhaetian origin, including the Arusnates. In Roman times the lower plateau was largely wooded, while the higher esplanades were used for summer grazing.
After the fall of the Western Roman Empire, the territory experienced a marked demographic decline, which began to reverse only in the early 11th century. From the Carolingian age until the rise of the communal age, much of Lessinia was under the control of the Veronese Church. This dominion entered into crisis with the growing power of the wool merchants, among whom the Della Scala family, future lords of Verona, became prominent urban representatives. In 1287 Bishop Bartolomeo della Scala allowed settlers of German origin to settle in the area of present-day Roverè Veronese, forming the first nucleus of the Cimbrians of Lessinia.
After the Devotion of Verona to Venice in 1405, the plateau came under the rule of the Republic of Venice, which granted its inhabitants privileges in exchange for guarding the northern border. The arrival of Napoleon brought major changes in the administrative structure of the area, some of which were maintained under later Austrian rule. The years following the annexation of Veneto to the Kingdom of Italy were difficult for the local population, which suffered from famine and epidemics. Spared from the main events of World War I and World War II, the higher Lessinian municipalities experienced gradual depopulation in the second half of the 20th century, as many inhabitants moved toward urban areas.
Toponym
Historical names used in Veronese documents for this territory are Luxino, Lixino, Lesinio, Lissinorum and Lissinia, generally with the meaning of "land used and prepared for pastures". The earliest known document in which the term appears is a deed dated 7 May 814, in which the gastald Ildemanno of Verona donated "campo meo in Luxino ad Alpes facienda, una cum capilo pasquo" to the Veronese monastery of Santa Maria in Organo.. The name may also have originated from the Veronese dialect expression le sime, meaning peaks, or from the Venetian lisso or lissio, a channel of beams used for sliding timber.
Geography
Boundaries and landscape
Enclosed to the north by the deep Val di Ronchi and the Carega Group, bounded to the east by the Val Leogra, to the southeast by the hills of Monteviale, to the southwest by the course of the Adige and the upper Veronese plain, and to the west by the Val Lagarina, Lessinia forms an almost self-contained unit within the Venetian Prealps.
It is furrowed by numerous valleys that descend from the high pastures and fan out toward Verona and the plain. Proceeding from west to east are the valleys of Fumane, Marano and Negrar, which together form the historically defined area of Valpolicella, followed by the Valpantena, Squaranto, Mezzane, d'Illasi, Tramigna, d'Alpone, Chiampo and Agno valleys. Its western heights fall within the Venetian Prealps, with peaks between 1,500 and 1,800 m, while the Carega group to the northeast exceeds 2,200 m. The central range lies mostly between 1,000 and 1,300 m. Among its peaks are Corno d'Aquilio, Monte Tomba and Cima Trappola.
The landscape of the High Pastures of Lessinia has been officially recognized as an agrarian landscape and included in the National Register of Historic Rural Landscapes, prepared by Decree No. 17070 of 19 November 2012 of the Ministry of Agriculture, Food and Forestry Policies. The Lessinia Regional Park covers 10,201 hectares and extends between about 200 and 1,990 metres above sea level in the provinces of Verona and Vicenza. The higher plateau is marked by rounded ridges and open pastureland, while steeper slopes and valley sides preserve forests of hornbeam, beech, silver fir and spruce. This alternation between woodland, vaj or canyon-like valleys, meadows, pastures and rural settlements is one of the defining features of the Lessinian landscape.
Hydrography
The karstification of the limestone rocks that form much of Lessinia has produced an irregular and partly discontinuous hydrographic network. During the Quaternary, stream erosion and glacial or periglacial phases contributed to carving the valleys that dissect the plateau. Throughout the area there are numerous springs, both temporary ones related to snowmelt and rainfall and permanent ones, which flow mainly at the outlet of the valleys between the upper and lower plains. The most notable are found on the Trentino side in the Ronchi valley, about 11 km long and crossed by the Ala stream, and in Val Bona, while on the Veronese side those in Val d'Illasi and between Velo and Val di Mazzano are among the most substantial..
At Fumane flows the progno of the same name, progno being a Veronese dialect term for a stream. After originating from Mount San Giovanni and Mount Loffa, it travels about 14 km through the Progni valley, receiving water from numerous tributaries.. The Marano di Valpolicella valley, about 7 km long, is crossed by the Marano stream, which comes from Vajo Camporal and rises at Mount Noroni. Further east, the 11-km-long Negrar di Valpolicella valley is traversed by the stream of the same name, which originates from the Fane stream and has among its tributaries the Fiamene, Prun, Mazzano, San Ciriaco, Sieresol, Pozzetta, Quena and Cancello streams. In the lowlands, the Negrar and Marano streams join and flow into the Adige River..
Near Verona, the Quinzano and Avesa streams reach the plain and then flow into the Adige.. East of Verona is the great Valpantena valley, oriented north-south and extending for about 26 km with a catchment area of 150 km². To the north it divides into the Alta Valpantena and the Vajo dell'Anguilla.. The stream of Valpantena, after passing through the area of Borgo Venezia, flows into the Adige west of San Michele Extra.. Further east, the Vajo Squaranto originates from Cima Trappola and joins the Vajo Illasi after receiving several tributaries, including the Fibbio and Marcellise streams, at San Martino Buon Albergo, then ending in the Adige before Belfiore..
The Val d'Illasi, about 22 km long, bisects the Lessinia plateau and extends into the Carega group. It is very narrow in its northernmost part, with a width of just under 200 metres at Selva di Progno, before opening near Illasi to about 3 km. Near Giazza the Fraselle valley opens in a west-east direction and is crossed by the stream of the same name.. The last major valley in the province of Verona is the Val d'Alpone, crossed by the Alpone torrent for about 32 km. Originating at Mount Purga, it ends in the Adige 7 km after passing through San Bonifacio.. In the province of Vicenza, the Val del Chiampo extends for about 31 km and is crossed by the Chiampo torrent, which also ends in the Adige after receiving numerous streams whose headwaters are located at about 1,650 m above sea level..
Climate
Climatically, Lessinia can be divided into three belts: a humid temperate one, sometimes tending toward a sub-Mediterranean climate and allowing olive cultivation, from the foothills to about 700 m; a fresh temperate one between 700 m and 1,500 m; and a cold temperate one above 1,500 m. Average temperatures range between 5 °C and 13 °C, with an average decrease of about 0.5 °C for every 100 m of altitude gained. January is the coldest month, with average lows often below -1 °C, while the hottest period is between July and August, when highs reach between 22 °C and 29 °C. Relative humidity ranges between 50% and 70%..
Average precipitation of about 850 mm is recorded at the valley floor and increases significantly northward. The lowest rainfall occurs in January and February, with a secondary low between July and September, except for August, when convective activity can increase rainfall. The highest rainfall occurs in October and November, with a secondary maximum between April and June. Snow, more frequent in the central and eastern zone, falls in winter between December and mid-February and generally does not exceed 80 centimetres on average..
Climate tables for Velo Veronese at 1,074 m a.s.l. and Grezzana at 267 m a.s.l. are given as examples:
The prevailing winds blow from west to east, while those from the north are largely stopped by the major elevations. Minor currents and breezes move from lower to higher areas, producing condensation and cloud formation in the higher parts of Lessinia..
Seismicity
Lessinia has a moderate level of seismicity and lies within the broader seismic framework of the southern Alpine margin. Its earthquakes are not related to volcanic activity, but to crustal deformation and fault systems affecting the Lessini-Schio sector and neighbouring areas.
The Illasi valley is one of the historically most significant seismic areas of Lessinia. The earthquake of 7 June 1891, located in the Valle d'Illasi, caused strong damage near the epicentre, with an estimated epicentral intensity of VIII-IX on the MCS scale and a moment magnitude of about 5.7; damaging effects were recorded across much of Lessinia. Other damaging events were also located in the Illasi valley in the late 19th and early 20th centuries.
The wider Veronese area was also affected by earlier major historical earthquakes, including the earthquake of 1117, although the source and location of that medieval event remain debated in the seismological literature.
Geology, karst and caves
Lessinia is one of the major karst landscapes of the Venetian Prealps. Its limestones and marly limestones have produced caves, sinkholes, collapse dolines, natural arches, underground drainage systems, rock shelters and deeply incised vaj. The same geological structure also explains the presence of fossiliferous formations, stone quarries and stratified slabs used in vernacular architecture. The exploitation of stone materials in Lessinia dates back to protohistoric times, while the extraction of Pietra di Prun, or lastame, is documented from the Iron Age and is associated with the Scaglia Rossa formation of Late Cretaceous age.
Among the best-known karst features is the Ponte di Veja, near Sant'Anna d'Alfaedo, a large natural bridge formed from the remains of a collapsed cave system. It consists of an arch about 40 metres long, with a minimum thickness of about 9 metres and a width of about 20 metres. The site is also associated with prehistoric occupation in nearby rock shelters and caves.