South Mountain is a prominent mountain range located in Maryland, stretching approximately 40 miles along the western edge of the Great Appalachian Valley. It is part of the larger Appalachian Mountains and features a variety of landscapes, including forests, ridges, and valleys. The area is known for its natural beauty and recreational opportunities, such as hiking and camping. The mountain range is home to several parks, including South Mountain State Park, which offers trails and scenic views. Additionally, it has historical significance, as it was the site of the Battle of South Mountain during the American Civil War in 1862.