The Cascades Conservation Area is located in the Appalachian Mountains in Giles County near Pembroke, Va.

A second popular destination is Barney’s Wall, a tall cliff that gives a commanding view of the area.

The great diversity is related to the many ridges and valleys which form isolated communities in which species evolve separately from one another.

To escape the glaciers, northern species retreated south to find refuge in the southern Appalachians.

The province consists of a thick layer of sedimentary rock that has undergone folding and/or faulting to create a series of ridges and valleys.

During the sedimentation process fossils were formed leaving evidence of life existing millions of years ago.

The rule provided some degree of protection by reducing the negative environmental impact of road construction and thus promoting the conservation of roadless areas.