Caption: Natural Bridge, Virginia
There are many types of "wonders" in the world. Some are man-made sites. Others were made by a combination of man and nature. A natural wonder is a particularly remarkable creation that is made solely by nature's forces. Besides the many historic places in the state of Virginia, there are also several natural wonders.
One natural wonder is located near Duffield. It is called the Natural Tunnel. The tunnel was said to have been discovered by American pioneer Daniel Boone. Geologists believe it to be one million years old. Water carved this hole through the limestone and dolomite in the mountains. Statesman William Jennings Bryan called the tunnel the "eighth wonder of the world." It is big enough to drive a train through it. That is exactly what one railroad company did.