The mountain range in Pennsylvania is the Appalachian Mountains. This range extends from the Canadian province of Newfoundland and Labrador in the north to central Alabama in the United States in the south. The Appalachian Mountains are a major barrier to east-west travel, as they form a series of alternating ridgelines and valleys oriented in opposition to most highways and railroads running east-west.
In Pennsylvania, the Appalachian Mountains include several subranges, such as the Allegheny Mountains and the Pocono Mountains. These mountains are known for their scenic beauty, diverse wildlife, and recreational opportunities, including hiking, skiing, and camping. The Appalachian Trail, a famous long-distance hiking trail, also passes through Pennsylvania, offering hikers a chance to experience the state’s mountainous terrain.