The Appalachian region is characterized by rocky soils due to its mountainous terrain and ancient geological history.

The Appalachian region's soils are primarily rocky, reflecting the area's rugged topography and ancient eroded mountains. These soils are often shallow and acidic, making large-scale agriculture challenging. However, in valleys and lower elevations, more fertile loams can be found, supporting farming in localized areas. The rocky nature of the soil is due to the region's long geological history, including uplift, weathering, and erosion. These soils are better suited for forests, which dominate the region, contributing to its rich biodiversity. Additionally, the rocky soils play a role in the formation of streams and rivers, which have shaped the Appalachian landscape over millions of years.