Mount Jefferson is a

mountain A mountain is an elevated portion of the Earth's crust, generally with steep sides that show significant exposed bedrock. Although definitions vary, a mountain may differ from a plateau in having a limited summit area, and is usually higher t ...

located just outside

Charlottesville, Virginia Charlottesville, colloquially known as C'ville, is an independent city (United States), independent city in Virginia, United States. It is the county seat, seat of government of Albemarle County, Virginia, Albemarle County, which surrounds the ...

, United States, in

Albemarle County Albemarle County is a United States county located in the Piedmont region of the Commonwealth of Virginia. Its county seat is Charlottesville, which is an independent city entirely surrounded by the county. Albemarle County is part of the Ch ...

. It lies south of Lewis Mountain, and is positioned at the northeastern edge of the

Ragged Mountains The Ragged Mountains are a small chain of rugged hills—an offshoot of the Blue Ridge Mountains—southwest of Charlottesville, Virginia. have been preserved as the Ragged Mountain Natural Area. The region provided the atmospheric set ...

. It was named Mount Jefferson in honor of

Thomas Jefferson Thomas Jefferson (, 1743July 4, 1826) was an American Founding Fathers of the United States, Founding Father and the third president of the United States from 1801 to 1809. He was the primary author of the United States Declaration of Indepe ...

after the establishment of the

Leander McCormick Observatory The Leander McCormick Observatory is one of the astronomical observatories operated by the Department of Astronomy of the University of Virginia, and is situated just outside Charlottesville, Virginia (US) in Albemarle County on the summit of ...

on the summit in 1885. Jefferson had urged the purchase of the mountain for the

University of Virginia The University of Virginia (UVA) is a Public university#United States, public research university in Charlottesville, Virginia, United States. It was founded in 1819 by Thomas Jefferson and contains his The Lawn, Academical Village, a World H ...

, in part because of its suitability as a site for an observatory. In addition, he valued it for the

water Water is an inorganic compound with the chemical formula . It is a transparent, tasteless, odorless, and Color of water, nearly colorless chemical substance. It is the main constituent of Earth's hydrosphere and the fluids of all known liv ...

resources and the abundance of

timber Lumber is wood that has been processed into uniform and useful sizes (dimensional lumber), including beams and planks or boards. Lumber is mainly used for construction framing, as well as finishing (floors, wall panels, window frames). ...

for

construction Construction are processes involved in delivering buildings, infrastructure, industrial facilities, and associated activities through to the end of their life. It typically starts with planning, financing, and design that continues until the a ...

of the university. Prior to the renaming it had been known as Old Reservoir Mountain and Observatory Mountain (for an observatory which Jefferson directed to be built on the summit), and is now informally known as Observatory Hill. The mountain is traversed by McCormick Road and Edgemont Road (which also runs along a neighboring ridge — Edgemont or Midmont), and is the site of several other University of Virginia buildings including a deactivated

nuclear reactor A nuclear reactor is a device used to initiate and control a Nuclear fission, fission nuclear chain reaction. They are used for Nuclear power, commercial electricity, nuclear marine propulsion, marine propulsion, Weapons-grade plutonium, weapons ...

, a

linear accelerator A linear particle accelerator (often shortened to linac) is a type of particle accelerator that accelerates charged subatomic particles or ions to a high speed by subjecting them to a series of oscillating electric potentials along a linear ...

and

dormitories A dormitory (originated from the Latin word ''dormitorium'', often abbreviated to dorm), also known as a hall of residence, a residence hall (often abbreviated to halls), or a hostel, is a building primarily providing sleeping and residential qu ...

. It has been preserved in a largely

wooded A woodland () is, in the broad sense, land covered with woody plants (trees and shrubs), or in a narrow sense, synonymous with wood (or in the U.S., the '' plurale tantum'' woods), a low-density forest forming open habitats with plenty of sunli ...

state for the protection of McCormick Observatory from

light pollution Light pollution is the presence of any unwanted, inappropriate, or excessive artificial Visible spectrum, lighting. In a descriptive sense, the term ''light pollution'' refers to the effects of any poorly implemented lighting sources, during the ...

. It is used by

birdwatchers Birdwatching, or birding, is the observing of birds, either as a recreational activity or as a form of citizen science. A birdwatcher may observe by using their naked eye, by using a visual enhancement device such as binoculars or a telescop ...

, mountain bikers, hikers, and students and faculty at

The Judge Advocate General's Legal Center and School ''The'' is a grammatical article in English, denoting nouns that are already or about to be mentioned, under discussion, implied or otherwise presumed familiar to listeners, readers, or speakers. It is the definite article in English. ''The ...

, U.S. Army, for military physical fitness training. The headquarters for the

National Radio Astronomy Observatory The National Radio Astronomy Observatory (NRAO) is a federally funded research and development center of the United States National Science Foundation operated under cooperative agreement by Associated Universities, Inc. for the purpose of radi ...

are also located on Mount Jefferson.

References

External links

*
"McCormick Observatory history"
Mountains of Virginia Landforms of Albemarle County, Virginia Protected areas of Albemarle County, Virginia {{AlbemarleCountyVA-geo-stub