The Allegheny Mountain Range, informally the Alleghenies, is part of the vast Appalachian Mountain Range of the Eastern United States and Canada and posed a significant barrier to land travel in less developed eras. The Allegheny Mountains have a northeast–southwest orientation, running for about 300 miles (480 km) from north-central Pennsylvania, southward through western Maryland and eastern West Virginia.
View from atop Spruce Mountain in eastern West Virginia, the highest point in the Alleghenies
North Fork Mountain, West Virginia, looking south
Blue Knob, the most northern 3,000 footer in the Allegheny Mountain Range.
The Homestead, Hot Springs, Virginia, has catered to spa enthusiasts since 1766.
The Appalachian Mountains, often called the Appalachians, are a mountain range in eastern to northeastern North America. The term "Appalachian" refers to several different regions associated with the mountain range, and its surrounding terrain. The general definition used is one followed by the United States Geological Survey and the Geological Survey of Canada to describe the respective countries' physiographic regions. The U.S. uses the term Appalachian Highlands and Canada uses the term Appalachian Uplands; the Appalachian Mountains are not synonymous with the Appalachian Plateau, which is one of the provinces of the Appalachian Highlands.
The Appalachian Mountains in the background with Penns Valley in Pennsylvania in the foreground in October 2021
Appalachian Mountains broken down by physiographic division, provinces, and sections
Appalachian Highlands physiographic provinces
Appalachian Uplands of Canada's 13 divisions