Which geological feature is notably formed by erosion in West Virginia?

The correct answer reflects the significant role that erosion plays in the formation of caves and hollow systems, particularly in a state like West Virginia, which is rich in limestone and karst topography. Erosion from water, along with other natural processes, gradually wears away the limestone, creating expansive cave systems and underground hollow areas. These systems are often interconnected and can form stunning geological features, including stalactites and stalagmites, as minerals deposit in the caves.

While other geological features like mountains, plateaus, and valleys can also be influenced by erosion, the unique karst landscapes of West Virginia are particularly characterized by these caves and hollow systems, setting them apart as a direct result of the erosion process in limestone-rich regions.