Lehigh County is a county in the Commonwealth of Pennsylvania. As of the 2020 census, the county's population was 374,557. Its county seat is Allentown, the state's third-largest city after Philadelphia and Pittsburgh.
The Great Appalachian Valley, also called The Great Valley or Great Valley Region, is one of the major landform features of eastern North America. It is a gigantic trough, including a chain of valley lowlands, and the central feature of the Appalachian Mountains system. The trough stretches about 1,200 miles (1,900 km) from Quebec in the north to Alabama in the south and has been an important north–south route of travel since prehistoric times.
The Lehigh River is a 109-mile-long (175 km) tributary of the Delaware River in eastern Pennsylvania. The river flows in a generally southward pattern from the Pocono Mountains in Northeastern Pennsylvania through Allentown and much of the Lehigh Valley before joining the Delaware River in Easton.
U.S. Route 222 is a U.S. Highway that is a spur of US 22 in the states of Maryland and Pennsylvania. It runs for 95 miles (153 km) from US 1 in Conowingo, Maryland, north to the junction of Interstate 78 (I-78) and Pennsylvania Route 309 in Dorneyville, Pennsylvania. US 222 is almost entirely in Pennsylvania, and serves as the state's principal artery between the Lancaster and Reading areas in the west and the Lehigh Valley in the east.
The Bull Run Mountains are a mountain range of the Blue Ridge Mountains in northern Virginia in the United States. Located approximately 20 miles (32 km) east of the main chain, across the Loudoun Valley. The Bull Run Mountains, together with Catoctin Mountain in Virginia and Maryland, make up the easternmost front of the Blue Ridge.
Blue Mountain, Blue Mountain Ridge, or the Blue Mountains of Pennsylvania is a ridge of the Appalachian Mountains in eastern Pennsylvania. Forming the southern and eastern edge of the Ridge-and-Valley Appalachians physiographic province in Pennsylvania, Blue Mountain extends 150 miles (240 km) from the Delaware Water Gap on the New Jersey border in the east to Big Gap in Franklin County in south-central Pennsylvania at its southwestern end.
Regions of Pennsylvania in the United States include:
Interstate 78 (I-78) is an east–west Interstate Highway stretching from Union Township, Lebanon County, Pennsylvania, in the west to the Holland Tunnel and New York City in the east. In Pennsylvania, I-78 runs for about 78 miles (126 km) from the western terminus at I-81 in Union Township east to the New Jersey state line near Easton in Northampton County.
The Geology of Pennsylvania consists of six distinct physiographic provinces, three of which are subdivided into different sections. Each province has its own economic advantages and geologic hazards and plays an important role in shaping everyday life in the state. From the southeast corner to the northwest corner of the state, the include: the Atlantic Plain Province province, the Piedmont Province, the New England Province, the Ridge and Valley Province, the Appalachain Province, and the Central Lowlands Province.
Pochuck Mountain is a ridge in the New York-New Jersey Highlands region of the Appalachian Mountains. Pochuck Mountain's summit and most of its peaks lie within Vernon Township, Sussex County, New Jersey, although the south-western portion of the ridge lies within Hardyston Township, and the north-eastern tip of the ridge extends over the New York state line into Orange County. The ridge marks the eastern edge of the Great Appalachian Valley, and it divides the watersheds of the Wallkill River and its tributary Pochuck Creek. The two rivers meet at Pochuck Neck, marking the terminus of the ridge.
The Reading Prong is a physiographic subprovince of the New England Uplands section of the New England province of the Appalachian Highlands. The prong consists of mountains made up of crystalline metamorphic rock.
The Lebanon Valley is a geographic region that lies between South Mountain and the Ridge and Valley Province of eastern Pennsylvania. The valley lies almost entirely within Lebanon and Berks counties in Pennsylvania. Portions of the valley lie in eastern Dauphin and northern Lancaster counties in Pennsylvania. It is bound to its southwest by the Susquehanna River and to its northeast by the adjoining Lehigh Valley.
Swabia Creek is a tributary of Little Lehigh Creek in Berks and Lehigh Counties in the eastern Pennsylvania region of the Lehigh Valley.
Pisgah Mountain or Pisgah Ridge is a ridgeline running 12.5 miles (20.1 km) from Tamaqua to Jim Thorpe, Pennsylvania. It is oriented north-northeast to south-southwest, and its north-side valley is followed by U.S. Route 209 from river gap to river gap. The ridge is a succession of peaks exceeding 1,440 feet (438.9 m) rising 300 to 540 feet above the boroughs of Lansford, Coaldale, and Tamaqua in the Panther Creek valley. The highest point on Pisgah Mountain is at 1,611 feet (491 m) in the borough of Summit Hill, which sits atop the ridge. Near Summit Hill was the "Sharpe Mountain" (peak) where in 1791 Phillip Ginter is documented as having discovered anthracite, leading to the formation of the Lehigh Coal Mine Company. In 1818 the Lehigh Coal Company took over the mines, and the mining camp gradually became a settlement and grew into Summit Hill.
The Trexler Nature Preserve is an 1,108-acre county park (448 ha) owned and maintained by Lehigh County in the Lehigh Valley region of Pennsylvania. The preserve is situated in Lowhill Township and North Whitehall Township and the land that comprises the preserve was originally purchased between 1901 and 1911 by local industrialist General Harry Clay Trexler.
The Pimple Hills are a range of the New York-New Jersey Highlands region of the Appalachian Mountains. The summit, reaching a height of 1,122 feet (342 m), lies within Sussex County, New Jersey.
Mauch Chunk Ridge or Mauch Chunk Mountain is a historically important barrier ridgeline north of the Blue Mountain escarpment and 3rd parallel ridgeline south of the Nesquehoning Creek after Nesquehoning Mountain and Pisgah Ridge in the Ridge-and-Valley Appalachians of Northeastern Pennsylvania. The three lengthy ridges and two valley formations together are literally the first ridges and valleys just south of the Poconos on the opposite side of the Lehigh River—geological formations which contain some of the richest Anthracite coal bearing sedimentary rocks of Northeastern Pennsylvania. Historically, the first Anthracite mines in America were located atop Pisgah Mountain at Summit Hill and caravanned by pack mule through the Mauch Chunk Creek valley. Then the historic Mauch Chunk and Summit Hill Switchback Railroad, the second railway in North America was built along the Pisgah Mountain side of the same valley—and become quite a tourist attraction and is known as the world's first roller coaster, and would inspire others in purpose built amusement parks. The Mauch Chunk and Summit Hill Switchback Railroad became only a tourist road in the 1890s and thrilled riders until it was liquidated in the 1930s, a casualty of the Great depression.
Lehigh Mountain is a mountain in Lehigh County, Pennsylvania. The main peak rises to 843 feet (257 m) and is located in Salisbury Township. Lehigh Mountain is located on the right bank of the Lehigh River, and is separated from South Mountain by the headwaters of Trout Creek. It is part of the Reading Prong of the Appalachian Mountains.
Applebutter Hill is a low mountain in Lehigh County, Pennsylvania. The main peak rises to 850 feet (259 m), and is located in Upper Saucon Township. Applebutter Hill is located to the west of Center Valley, and is north of Coopersburg.
Broad Mountain or Broad Ridge in the Ridge-and-Valley Appalachians in Carbon County and Schuylkill County in Pennsylvania is a steep-faced, anthracite-bearing barrier ridge just south of both Beaver Meadows and Weatherly, north of Nesquehoning and west and south of the Lehigh River basin west of the southwest border of the Poconos. The mountain ridge line is mostly flat and looks very similar to the man-made piles of culm in the region from the roads and towns looking up.
