Natural Bridge in Rockbridge County,
Virginia is a geological formation in which Cedar Creek (a small tributary of
the James River) has carved out a gorge in the mountainous limestone terrain,
forming an arch 215 ft (66 m) high with a span of 90 ft (27 m). It consists of
horizontal limestone strata, and is the remains of the roof of a cave or tunnel
through which the creek once flowed. It is crossed by a public road, U.S.
Highway 11. There are fences on either side of the highway, blocking the view
from the top of the bridge. Natural Bridge has been designated a Virginia
Historical Landmark and a National Historical Landmark. Natural Bridge is
marketed as one of the seven natural wonders of the world, but this refers to a
mention on an old list of seven natural wonders of the modern world.
