The Lancaster Valley AVA is an American Viticultural Area

American Viticultural Area

An American Viticultural Area is a designated wine grape-growing region in the United States distinguishable by geographic features, with boundaries defined by the Alcohol and Tobacco Tax and Trade Bureau , United States Department of the Treasury....

 located in Lancaster

Lancaster County, Pennsylvania

Lancaster County, known as the Garden Spot of America or Pennsylvania Dutch Country, is a county located in the southeastern part of the Commonwealth of Pennsylvania, in the United States. As of 2010 the population was 519,445. Lancaster County forms the Lancaster Metropolitan Statistical Area, the...

 and Chester

Chester County, Pennsylvania

-State parks:*French Creek State Park*Marsh Creek State Park*White Clay Creek Preserve-Demographics:As of the 2010 census, the county was 85.5% White, 6.1% Black or African American, 0.2% Native American or Alaskan Native, 3.9% Asian, 0.0% Native Hawaiian, 1.8% were two or more races, and 2.4% were...

 counties of southeastern Pennsylvania

Pennsylvania

The Commonwealth of Pennsylvania is a U.S. state that is located in the Northeastern and Mid-Atlantic regions of the United States. The state borders Delaware and Maryland to the south, West Virginia to the southwest, Ohio to the west, New York and Ontario, Canada, to the north, and New Jersey to...

, centered around the city of Lancaster

Lancaster, Pennsylvania

Lancaster is a city in the south-central part of the Commonwealth of Pennsylvania. It is the county seat of Lancaster County and one of the older inland cities in the United States, . With a population of 59,322, it ranks eighth in population among Pennsylvania's cities...

. The wine region includes 225000 acres (91,054 ha) in a valley that is roughly 30 miles (48 km) long and 12 miles (19 km) wide, although only 400 acres (162 ha) are planted to grapevine

Grapevine

Grapevine is the common name for plants of the genus Vitis. Other meanings include:*Grapevine , a term often used to describe a form of communication by means of gossip or rumor, as in "heard it through the grapevine"...

s. The Lancaster Valley area is one of the most fertile agricultural areas in Pennsylvania, and features rich topsoil over 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....

bedrock.