Great Appalachian Valley in the context of "Lebanon Valley"

Hagerstown is a city in Washington County, Maryland, United States, and its county seat. The population was 43,527 at the 2020 census. Hagerstown ranks as Maryland's sixth-most populous incorporated city and is the most populous city in the Maryland Panhandle.

Hagerstown anchors the Hagerstown metropolitan area extending into West Virginia. It makes up the northwesternmost portion of the Washington–Baltimore combined statistical area in the heart of the Great Appalachian Valley. The population of the metropolitan area in 2020 was 293,844. Greater Hagerstown was the fastest-growing metropolitan area in the state of Maryland and among the fastest growing in the United States, as of 2009.

40°42′N 75°30′W / 40.700°N 75.500°W / 40.700; -75.500

The Lehigh Valley (/ˈliːhaɪ/) is a geographic and metropolitan region formed by the Lehigh River in Lehigh and Northampton counties in eastern Pennsylvania. It is a component valley of the Great Appalachian Valley bounded to its north by Blue Mountain, to its south by South Mountain, to its west by Lebanon Valley, and to its east by the Delaware River and Warren County, New Jersey. The Lehigh Valley is about 40 miles (64 km) long and 20 miles (32 km) wide. The Lehigh Valley's largest city is Allentown, the third-largest city in Pennsylvania and the county seat of Lehigh County, with a population of 125,845 residents as of the 2020 census.

The Blue Ridge Mountains are a physiographic province of the larger Appalachian Highlands range. The mountain range is located in the Eastern United States and extends 550 miles (885 km) southwest from southern Pennsylvania through Maryland, West Virginia, Virginia, North Carolina, South Carolina, Tennessee, and Georgia. The province consists of northern and southern physiographic regions, which divide near the Roanoke River gap. To the west of the Blue Ridge, between it and the bulk of the Appalachians, lies the Great Appalachian Valley, bordered on the west by the Ridge and Valley province of the Appalachian range.

The Blue Ridge Mountains are known for having a bluish color when seen from a distance. Trees put the "blue" in Blue Ridge, from the isoprene released into the atmosphere. This contributes to the characteristic haze on the mountains and their perceived color.

The Shenandoah Valley (/ˌʃɛnənˈdoʊə/) is a geographic valley and cultural region of western Virginia and the eastern panhandle of West Virginia in the United States. The Valley is bounded to the east by the Blue Ridge Mountains, to the west by the eastern front of the Ridge-and-Valley Appalachians (excluding Massanutten Mountain), to the north by the Potomac River, to the south by the James River, and to the Southwest by the New River Valley. The cultural region covers a larger area that includes all of the Valley plus the Virginia Highlands to the west and the Roanoke Valley to the south. It is physiographically located within the Ridge and Valley Province and is a portion of the Great Appalachian Valley.

Lake George (Mohawk: Kaniá:taro’kte, "Lake-End") is a long narrow oligotrophic lake located at the southeast base of the Adirondack Mountains, in the northeastern portion of the U.S. state of New York. It lies within the upper region of the Great Appalachian Valley and drains all the way northward into Lake Champlain and the St. Lawrence River drainage basin. The lake is situated along the historical natural (Amerindian) path between the valleys of the Hudson and St. Lawrence Rivers, and so lies on the direct land route between Albany, New York, and Montreal, Quebec, Canada. The lake extends about 32.2 mi (51.8 km) on a north–south axis, is 187 ft (57 m) deep, and ranges from one to three miles (1.6 to 4.8 km) in width, presenting a significant barrier to east–west travel. Although the year-round population of the Lake George region is relatively small, the summertime population can swell to over 50,000 residents, many in the village of Lake George region at the southern end of the lake.

Lake George drains into Lake Champlain to its north through a short stream, the La Chute River, with many falls and rapids and drops 226 feet (69 m) in its 3.5-mile (5.6 km) course, virtually all of which is within the lands of Ticonderoga, New York, and near the site of Fort Ticonderoga. Ultimately, the waters flowing via the 106-mile-long (171 km) Richelieu River drain into the St. Lawrence River downstream and northeast of Montreal, and then into the North Atlantic Ocean in Nova Scotia.

Chambersburg is a borough in and the county seat of Franklin County, in the South Central region of Pennsylvania, United States. It is in the Cumberland Valley, which is part of the Great Appalachian Valley, and 13 miles (21 km) north of Maryland and the Mason-Dixon line and 52 miles (84 km) southwest of Harrisburg, the state capital. According to the United States Census Bureau, Chambersburg's 2020 population was 21,903. When combined with the surrounding Greene, Hamilton, and Guilford Townships, the population of Greater Chambersburg is 66,340 people. The Chambersburg, PA Metropolitan Statistical Area includes surrounding Franklin County, and in 2010 included 149,618 people.

According to the Pennsylvania Department of Community and Economic Development, Chambersburg Borough is the thirteenth-largest municipality in Pennsylvania and the largest borough as measured by fiscal size as of 2016. Chambersburg Borough is organized under the Pennsylvania Borough Code and is not a home-rule municipality.

The Cumberland Valley is a northern constituent valley of the Great Appalachian Valley, within the Atlantic Seaboard watershed in Pennsylvania and Maryland. The Appalachian Trail crosses through the valley.