The Sibillini Mountains (Italian

Italian language

Italian is a Romance language spoken mainly in Europe: Italy, Switzerland, San Marino, Vatican City, by minorities in Malta, Monaco, Croatia, Slovenia, France, Libya, Eritrea, and Somalia, and by immigrant communities in the Americas and Australia...

: Monti Sibillini) are a mountain group in Italy

Italy

Italy , officially the Italian Republic languages]] under the European Charter for Regional or Minority Languages. In each of these, Italy's official name is as follows:;;;;;;;;), is a unitary parliamentary republic in South-Central Europe. To the north it borders France, Switzerland, Austria and...

, part of the central Apennines

Apennine mountains

The Apennines or Apennine Mountains or Greek oros but just as often used alone as a noun. The ancient Greeks and Romans typically but not always used "mountain" in the singular to mean one or a range; thus, "the Apennine mountain" refers to the entire chain and is translated "the Apennine...

. Situated between eastern Umbria

Umbria

Umbria is a region of modern central Italy. It is one of the smallest Italian regions and the only peninsular region that is landlocked.Its capital is Perugia.Assisi and Norcia are historical towns associated with St. Francis of Assisi, and St...

 and the Marche

Marche

The population density in the region is below the national average. In 2008, it was 161.5 inhabitants per km2, compared to the national figure of 198.8. It is highest in the province of Ancona , and lowest in the province of Macerata...

, they are mostly composed of limestone

Limestone

Limestone is a sedimentary rock composed largely of the minerals calcite and aragonite, which are different crystal forms of calcium carbonate . Many limestones are composed from skeletal fragments of marine organisms such as coral or foraminifera....

 rocks, formed in the Mesozoic

Mesozoic

The Mesozoic era is an interval of geological time from about 250 million years ago to about 65 million years ago. It is often referred to as the age of reptiles because reptiles, namely dinosaurs, were the dominant terrestrial and marine vertebrates of the time...

 and Cenozoic

Cenozoic

The Cenozoic era is the current and most recent of the three Phanerozoic geological eras and covers the period from 65.5 mya to the present. The era began in the wake of the Cretaceous–Tertiary extinction event at the end of the Cretaceous that saw the demise of the last non-avian dinosaurs and...

 (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 2000 m (6,561.7 ft); the highest altitude is reached by Monte Vettore

Monte Vettore

Monte Vettore is a mountain on the border between Umbria and the Marche, in central Italy. It is part of the Sibillini mountains range and lies in the Parco Nazionale dei Monti Sibillini. Today climbers reach it from the Umbrian side from Norcia, or, on the Marche side, from Ascoli Piceno...

 at 2476 m (8,123.4 ft).

Since 1993 the area has been part of the Parco Nazionale dei Monti Sibillini

Parco Nazionale dei Monti Sibillini

thumb|280px|A view of [[Monte Sibilla]].The Parco Nazionale dei Monti Sibillini is an Italian national park located across the regions of Marche and Umbria, encompassing the provinces of Macerata, Fermo, Ascoli Piceno and Perugia.It was established in 1993, and now contains more than 70,000...

 (Sibillini Mountains National Park).

The current morphology, largely dominated by U-shaped valleys and glacial depressions, is due to the action of glacier

Glacier

A glacier is a large persistent body of ice that forms where the accumulation of snow exceeds its ablation over many years, often centuries. At least 0.1 km² in area and 50 m thick, but often much larger, a glacier slowly deforms and flows due to stresses induced by its weight...

s in the Quaternary

Quaternary

The Quaternary Period is the most recent of the three periods of the Cenozoic Era in the geologic time scale of the ICS. It follows the Neogene Period, spanning 2.588 ± 0.005 million years ago to the present...

 period. Also regions of Karst topography

Karst topography

Karst topography is a geologic formation shaped by the dissolution of a layer or layers of soluble bedrock, usually carbonate rock such as limestone or dolomite, but has also been documented for weathering resistant rocks like quartzite given the right conditions.Due to subterranean drainage, there...

 are in evidence, caused by extension of the crust beneath western Italy and the Tyrrhenian Sea

Tyrrhenian Sea

The Tyrrhenian Sea is part of the Mediterranean Sea off the western coast of Italy.-Geography:The sea is bounded by Corsica and Sardinia , Tuscany, Lazio, Campania, Basilicata and Calabria and Sicily ....

.

Wildlife and vegetation

• crested porcupine
  Crested Porcupine
  The crested porcupine is a species of rodent in the Hystricidae family.It is extant in mainland Italy, Sicily, North Africa and sub-Saharan Africa.-Physical Attributes:...
  
  
• eurasian eagle owl
  Eurasian Eagle Owl
  The Eurasian Eagle-Owl is a species of eagle owl resident in much of Eurasia. It is also one of the largest types of owls.-Description:The Eagle Owl is a large and powerful bird, smaller than the Golden Eagle but larger than the Snowy Owl...
  
  
• golden eagle
  Golden Eagle
  The Golden Eagle is one of the best known birds of prey in the Northern Hemisphere. Like all eagles, it belongs to the family Accipitridae. Once widespread across the Holarctic, it has disappeared from many of the more heavily populated areas...
  
  
• peregrine falcon
  Peregrine Falcon
  The Peregrine Falcon , also known as the Peregrine, and historically as the Duck Hawk in North America, is a widespread bird of prey in the family Falconidae. A large, crow-sized falcon, it has a blue-gray back, barred white underparts, and a black head and "moustache"...
  
  
• roe deer
  Roe Deer
  The European Roe Deer , also known as the Western Roe Deer, chevreuil or just Roe Deer, is a Eurasian species of deer. It is relatively small, reddish and grey-brown, and well-adapted to cold environments. Roe Deer are widespread in Western Europe, from the Mediterranean to Scandinavia, and from...
  
  
• vipera
  Vipera aspis
  Vipera aspis is a venomous viper species found in southwestern Europe. Bites from this species can be more severe than from the European adder, V. berus; not only can they be very painful, but about 4% of all untreated bites are fatal...
  
  
• wildcat
  Wild cat
  The wildcat is a small cat with several subspecies and a very broad distribution, found throughout most of Africa, Europe, and southwest and central Asia into India, China, and Mongolia. It is a hunter of small mammals, birds, and other creatures of a similar or smaller size. Sometimes included is...
  
  
• wolf

The small tarn lake of Pilato, within a deep u-shaped valley below Monte Vettore, is home to a crustacean

Crustacean

Crustaceans form a very large group of arthropods, usually treated as a subphylum, which includes such familiar animals as crabs, lobsters, crayfish, shrimp, krill and barnacles. The 50,000 described species range in size from Stygotantulus stocki at , to the Japanese spider crab with a leg span...

 endemic

Endemic (ecology)

Endemism is the ecological state of being unique to a defined geographic location, such as an island, nation or other defined zone, or habitat type; organisms that are indigenous to a place are not endemic to it if they are also found elsewhere. For example, all species of lemur are endemic to the...

 of this location, the Chirocephalus marchesonii.

The area contains stands of beech

Beech

Beech is a genus of ten species of deciduous trees in the family Fagaceae, native to temperate Europe, Asia and North America.-Habit:...

scattered amongst open subalpine grasslands and meadows maintained by the grazing of sheep.